Comet sniffed the air. A faint scent tickled his nostrils. He couldn't quite place its source, but it felt like he was at least aware of what the scent was: It was the smell of cornstarch.

At first, the glasses wearing unicorn thought nothing of it. It was probably just wafting in from outside, or even coming from somewhere downstairs.

But as Comet wandered around the Brighthouse, the smell would not leave him alone. It was there whether he acknowledged its presence or not. Now it was starting to bother him. Where was that scent coming from?

By chance, as he wandered around, Comet happened to draw closer to the shared bedroom that his friends all occupied. He found it weird that only Hitch didn't have a bed of his own, not even when he was staying overnight at the Brighthouse. Yet those thoughts were soon pushed to the back of his mind as the scent he'd smelled earlier started to grow stronger. There was no mistaking it, it was originating from here, probably underneath one of his friends' beds.

Then the unicorn's pinkish-violet eyes spotted something that appeared to be sticking out from under Izzy's bed. He squinted despite wearing his glasses, and as he did so he could just make out the outline of something white and roughly triangular in shape. His curiosity getting the better of him, Comet trotted over, using his horn to pull the object out for a closer inspection. He was not prepared for the sight that greeted his eyes.

Much to the stallion's shock and surprise, he had pulled out an entire box, a very large one at that. Inside said box were a series of objects one might need if caring for a foal, except they all looked much bigger, far too big for any ordinary foal. There was a pacifier the same light pink as Izzy's coat, a smaller box containing wet wipes, a large tube of rash cream, a few well worn foal toys clearly sized up for a full grown pony, and a canister of foal powder. Most noticeable of all, however, were the large, white, and very poofy diapers poxing out. Did all of these things belong to Izzy? Why would she have them?

At that moment, Izzy happened to come trotting up into the bedroom, completely unaware of what Comet was doing. "Hey, Comet, everything alright?" She innocently asked.

Comet gasped and hastily tried to shove the box and its contents back under the bed to hide them! "W-why would anything not be alright?" He nervously exclaimed, hoping Izzy would buy it.

She did not. Izzy just trotted up to her fellow unicorn, all the while smiling and swishing her tail. "Come on, Comet. You're a terrible liar. I can see right through you," She commented with a smile. "What's wrong?"

The glasses wearing stallion backed up and tried to shrink from his fellow unicorn's gaze. "I... i-it's... nothing. AND-nothing's wrong, I swear!" Yet his hooves then betrayed him, causing him to stumble and fall. As he did so, it was now possible to see behind him and see what it was he'd been trying to hide.

Izzy let out a gasp when she saw the diapers and the foal supplies! But was it Comet's imagination, or did the gasp sound... playful for lack of a better term? "Oh no, you found out my secret!" She exclaimed as she put her hooves to her face with what seemed like exaggerated worry. "Well, I guess I should've expected that. I knew I should've found a better hiding place for my foal stuff. But I don't have a secret room in the Brighthouse like Misty does, and I don't know how Pipp manages to keep her foal stuff hidden."

Comet rose slowly, blinking in surprise. "Wait... all of that is for you, Izzy? The diapers, and the foal powder, and the toys, and... stuff?"

The unicorn mare with a lovely pink coat nodded back. "Yup. It's my little secret. Get it, my 'little' secret?" She giggled with childish worry.

Comet adjusted his glasses. His confusion hung overhead like a fog, there was still so much he didn't know or understand. "Y-you mean, you actually wear diapers and act like a foal? A-and you actually," He gulped. "Use your diapers for a bathroom?"

"Sometimes, sometimes not, it all depends on how 'little' I feel," Izzy innocently replied. "It's what's called an adult foal, though someponies call them forever foals. And when I get into my 'little' headspace, they call it ageplaying. I can't really explain it, but it's kind of like playing pretend or playing a role in a play."

The glasses wearing unicorn stallion could only say in response. "I still don't understand, Izzy. Why would anypony like to do things like that? I mean, not that I think it's wrong. I'm just... surprised, I guess. You don't seem to be very upset about me finding out about your secret, or that I was going through your... er... foal stuff without permission."

The unicorn mare's smile grew brighter and wider. "Now why would I be mad, Comet? Honestly, I'm glad I have another friend in on my secret, even though you're not the only one who knows." She gave a knowing wink.

"So, you've told the others?" Comet questioned as he scratched his head with a hoof.

"Only some of them," Izzy explained. "I still haven't told Zipp or Hitch yet. I'm actually trying to think of how best to tell them, seeing as they've always struck me as more... independent than the others, Zipp especially."

Comet let out a gasp when he realized what such statements implied! "So, does that mean Sunny, Pipp, and Misty all know about this?"

"Correct!" Izzy happily replied! Then she let out a gasp! "Oh my hoofness! I have to tell Pipp and Misty the news!"

"Tell us what, Izzy?" Pipp inquired as she came fluttering up to the shared bedroom at that very moment. But when she saw Comet and the exposed foal supplies, she could only gasp in what was only slightly exaggerated fashion! "Izzy, what did I tell you and Misty about leaving your diapers under the bed? It's such an obvious hiding place, it's the first place anypony's going to look!"

Izzy replied in an only slightly annoyed tone of voice. "Hey, it's not my fault if I can't think of a better place to hide them. But now the cat's out of the bag. I think we have to spill the beans."

Now it was Comet's turn to gasp! "Wait, you're an adult foal too, Pipp?!"

Pipp squeaked ever so slightly. "Guilty as charged, Comet. I've probably been one for as long as Izzy has, if not longer. Words cannot express how relieved I was when I found out Izzy was one too. Having somepony to share in the secret with made it all worthwhile."

Comet then questioned. "So, does that mean Misty is also..."

Izzy and Pipp nodded in unison, and Pipp explained. "-Oh yes, definitely. But she's a bit more... insecure about it. She's only ageplayed with us once before," She then put a hoof to her chin. "Come to think of it, that's the last time I can remember where Izzy and I got all padded up and had fun foaling out together. Has it really been that long already?"

Izzy shrugged her hooves. "I guess time really flies when you're busy doing other fun things with your friends, or stopping a no good fire alicorn from stealing everypony's cutie marks," When Comet shot her a look she just vaguely answered. "You had to be there."

"Why exactly do you girls like to... do all of that?" The glasses wearing unicorn asked Izzy and Pipp point blank. "There has to be a reason behind it, right?"

"Well, why don't you join us and find out?" Pipp offered. "We'll have to clear it up with Misty first, though."

A little later, after Izzy put her foal supplies back under her bed and out of sight, she joined Pipp and Comet as they paid a visit to Misty within the confines of the secret room she had discovered a while back. Izzy and Pipp quickly explained everything, and as they did so it was possible to notice a raging blush spread across Misty's face.

"So, he knows everything?" Misty inquired just to be sure. She received an answer in the form of three affirming nods. A sigh of relief escaped her lips. "Well, that's a relief. I was wondering when we were gonna have to tell him. In fact, I'm surprised he didn't find out accidentally," And turning to Izzy, she playfully scolded. "You really should find a better place to hide all your foal supplies, you know. Just imagine if Sparky found them by accident. How would you explain that to Hitch when you know how hard he had to work to get Sparky potty trained?"

Izzy playfully replied. "Under the bed was the best place I could think to hide them where nopony would look. It's too bad only you know how to access this secret room, Misty, or I'd hide all my foal stuff in here with you where I'd know it'd be safe."

"So, where do you hide your... er, foal stuff, Pipp?" Comet inquired of the pegasus popstar princess.

Pipp winked. "I keep them safely stored away at Mane Melody in a place where only I can access them. Whenever I think I'll need them, I make sure to smuggle them over to the Brighthouse and keep them hidden out back," She then coughed into a hoof. "But that's not what I brought us all here to discuss," Turning to Comet, she asked him point blank. "You're curious about the diapers and other things, aren't you?"

The glasses wearing unicorn stallion was silent for a moment, before answering. "I think I am. It definitely sounds interesting. and I'm always excited to learn new things," Then he gulped. "But how would we make it work, the four of us? There's not that much room in the Brighthouse. Plus, how would we take care of any..." He shuddered. "-Evidence?"

The pastel pink pegasus popstar proudly proclaimed! "Well, I've been thinking about ageplaying again! Now that the whole Opaline business is behind us and things have settled down, what better way to celebrate than with an ageplay livestream?! I know of a lot of good causes that could benefit from the generosity of my donors and fans."

"You think I'm ready to be part of one of those?" Misty nervously questioned. "What if my father sees me on it? How would I explain that to him after I specifically told him the last time I saw him that I didn't want him treating me like a little filly?"

"Well, we could do a trial run with Comet to see how well he does," Pipp explained. "We wouldn't actually be livestreaming just yet. After all, the location I have in mind is an untested one. It's in Zephyr Heights," She turned to Comet once again. "So, whaddya say? You wanna join us for a practice ageplay session before we start planning any charity livestreams? It'd just be the four of us and nopony else, none of our friends would have to know."

Comet hesitantly replied. "I... guess it couldn't hurt to try," But a nervous gulp escaped his lips as he thought aloud. "Does that mean I'd have to actually... you know?"

Misty replied. "You could if you want to, but you don't have to. That's the thing about being an adult foal, you can be as big or as little as you'd like. I know I'm not as big into using my diapers the way Izzy and Pipp are. I'll still do it a little from time to time, but usually I just wear them and that's it. Having to change myself is... less than ideal."

Pipp clapped her hooves together! "Splendid! It's all set! We can go first thing tomorrow! After all, I have to give Rocky and Jazz a heads up so they don't suspect anything when I don't show up to work."

But Comet questioned with concern. "But how are we going to get there? And how are we going to transport all of the... stuff? I thought Zipp didn't want anypony else trying to fly the Marestream without her?"

Pipp flashed a toothy grin. "I'll take care of the supplies, Comet. And I can make arrangements to have anything we can't bring with us be shipped in. When you're an ageplayer like me," She winked. "You tend to know ponies and places that can help you indulge."

Izzy then added. "And as for the rest of us, we can just teleport, Comet."

"Actually, I don't know if I can do that. I don't have a lot of practice." Comet confessed.

Misty smiled. "That's okay. You haven't been to Zephyr Heights yet anyway. Just leave the teleporting to Izzy and I, we'll make sure not to leave you behind."

And Izzy chimed in. "And you're welcome to borrow some of my diapers, Comet. I can always get more from Alphabittle. Without his help, I'd never have been able to indulge to my heart's content back in Bridlewood." And so it was arranged.

The next day came before long. When it dawned, Comet felt like he had butterflies in his stomach. His mind was a mix of conflicting feelings of worry and curiosity. This was going to be uncharted territory for him.

Time itself seemed to fly by. It wasn't long before Comet was leaving the Brighthouse with his fellow unicorns. And with a flick of their horns, they whisked him away to Zephyr Heights.

The glasses wearing unicorn's pinkish-violet eyes soon took in all the sights of Zephyr Heights, the magnificent city of the pegasi. It easily surpassed anything he had seen in Maretime Bay, and was rivaled only by the majesty of his village back in Starlight Ridge. How had he never known wonder like this before?

Alas, there was little time to dwell on such rich architecture and so vibrant a populace. The trio of unicorns had come to Zephyr Heights for a very specific reason, and it wasn't to take in the sights.

"So, where's this place Pipp was talking about?" Misty wondered as she looked around. Nothing seemed out of the ordinary.

Izzy shrugged her hooves. "It's probably somewhere very out of the way. Guess we should've asked for a location and directions. But oh well," She let out a sigh. "We'll find our way there one way or another."

But there was no need for the unicorns to start wandering aimlessly around. Just as they were about to start their search, Pipp swooped down and greeted them. "Oh, you're here. Good. I've already got things all set up. I decided to fly in early yesterday and make the arrangements ahead of time," She then gestured a hoof, leading her friends along. "Follow me."

The pastel pink pegasus pop star princess proudly paraded her friends through the many winding streets of Zephyr Heights, past houses, hotels, and shops as pegasi of all ages stopped to look at her or wave at her. Ordinarily, Pipp would've loved nothing more than to bask in such praise and affection. But she settled for just waving back and mouthing such phrases as "I love you all so much" and "Thank you for being my fans", before inevitably telling ponies that she was "going unplugged" for the day.

At last, the four friends reached their intended destination. Pipp proudly presented what appeared to a fairly inconspicuous looking building that appeared to not have been in use for quite some time. "I know it's not much to look at, but that's what makes it perfect!" She proclaimed as she ushered her friends towards the building's front door. "Rocky told me about it a while back. Apparently, this used to be a television studio way back when, which means it'll have plenty of wide open space for us to ageplay to our hearts' content."

Upon setting hoof inside and having the lights turned on, Izzy, Misty, and Comet were all amazed at what their eyes beheld! The entire interior had been re-decorated to resemble a giant nursery: The floor was covered by large rubber mats in hues of baby pink, blue, and yellow, large guard rails had been set up to turn a corner of the room into an oversized playpen currently populated by several comically large stuffed animals, four sized up high-chairs lay across the room from a massive mini-fridge, and there were not only four massive cribs in close proximity to each other, but also some small television sets. Most noticeable of all, though, was the truly gigantic changing table: Its smooth, padded surface and many cabinets stood out in bold detail.

"It took me forever to get everything set up just right!" Pipp exclaimed as she brushed her mane with a hoof. "That's why I knew I had to start working on it yesterday after we agreed to this trial run with Comet. But I think you'll find it's well worth the effort and the expense."

Izzy's mouth hung wide open in amazement, and it took her several minutes to find the words she wanted to say! "Wow! This puts even that club Alphabittle set up in Bridlewood to shame. This is the stuff dreams are made of, if you dream of giant nurseries! I know I do."

Misty, for her part, was all but speechless! "This is just... just... I don't even know... there are no words!"

Comet, meanwhile, turned to Pipp. "How did you ever manage to find all of these... sized up foal things? A-and, is all this really necessary for... foaling out as you put it?"

The pop star princess nodded. "You want to get the full experience, don't you? To see what it's like being an adult foal? Why shouldn't I go all out for your first time?"

The glasses wearing stallion's blush deepened. "Um, if I do end up... you know," He coughed into a hoof. "Do I have to change myself? Because if not that... might be a problem."

"Don't worry, Comet," Misty reassured the stallion. "We always make sure to respect each other's privacy. Whatever you do, we won't mind. And we'll be sure not to look while you're cleaning yourself up," She was quick to add. "Honestly, the changing and the cleaning up is the hardest part of being an adult foal if you ask me. It's why I'm not as big into using my diapers, either for number one or number two."

Izzy smiled. "The key, Comet, is to do whatever makes you feel comfortable. Find what makes you feel the most like a foal, and go from there."

"O-okay," Comet nervously replied. "So, I guess now we have to put on our diapers?"

"Duh!" Pipp giggled and snorted. "They're basically the whole point of being an adult foal. So enough chit chat! Hoist yourself up on the changing table already! We don't have all day!"

So Comet nervously trotted over to the changing table, climbed onto the padded surface, and lay down upon it. "Uh, now what?" He asked in hesitation, even though he knew what was coming.

Izzy took the lead, lighting up her horn and opening up one of the drawers. Soon, she had floated out a thick, white, poofy diaper. "Go ahead," She said to her fellow unicorn. "Put it on!"

The glasses wearing unicorn reluctantly took hold of the diaper when it was floated close to him. Feeling it crinkle and compress within his hoof touched something deep inside him. It felt so... comforting, for lack of a better term. Slowly and clumsily, he fiddled with his hooves and taped up the padded undergarment. Then he rose, and jumped down from the changing table, only for his hooves to give way due to the extra weight of his padding! He fell promptly upon his padded posture, making it crinkle and compress quite audibly!

Izzy, Pipp, and Misty couldn't help but laugh at the sight as Comet slowly stood back up. "Whoa!" He exclaimed as he pushed his glasses into place. "That's gonna take some getting used to."

"Yeah, the first time's always the hardest," Izzy said with a swish of her tail. "But hey, the poofier the better, right? Think of it as having a giant pillow taped to your butt." Then she made her way over to the changing table and climbed up onto it, grabbing a diaper from the opened drawer with her magic in the process.

In a matter of mere minutes, Izzy, Pipp, and Misty had all put on diapers too. And in contrast to Comet, they seemed to have no trouble waddling about in their thick pampers, which swayed and shook with every step they took.

"So, how does it feel to be back in diapers, Comet?" Izzy questioned her fellow unicorn as she waddled over to him.

The glasses wearing unicorn paused, taking a moment to gather his thoughts. "It feels... different, I guess. And kind of relaxing too," He found himself unable to resist poking his padding with a hoof. "You weren't kidding about the poofiness, Izzy."

The unicorn mare with a pretty pink coat smiled. "Well, don't thank me yet. You've only just started wearing 'em. See how you feel after you've had a chance to really make the most of 'em!" She patted her padding. "Trust me, these diapers can handle just about anything! These aren't your average, everyday, store brand foal diapers. Nu-uh! These are special. You have to have these ordered from the right ponies, like Alphabittle."

Misty sighed. "That just makes this all the more awkward to me. He practically babies Izzy already, and knows she likes it. Now how am I supposed to tell him that I actually don't necessarily mind it if he does the same to me?"

Izzy trotted over, reassuring her fellow mare. "You can cross that bridge later, Misty. For right now, just get into your foal headspace and let yourself relax. Let those big pony thoughts and worries float away."

"Okay, I'll try." Misty sincerely replied as she watched Izzy retrieve a pacifier, pop it into her mouth, and start suckling on it.

Pipp, meanwhile, had waddled her way over to the playpen, and had clumsily hoisted herself over the guard rails to land on the other side. For a brief moment, her padded behind was raised towards the air, not that it seemed to bother the popstar pegasus. "Hey, everypony, come on over!" She encouraged the unicorns. "Now's the time for play!"

Izzy, still suckling on her pacifier, happily and excitedly waddled over! She needed no hesitation to join in the fun. And it wasn't long before Misty did the same, waddling over with practiced precision.

Comet attempted to mimic the movements of his padded friends, putting a hoof forward only to feel his legs wabble and wiggle. How did they manage to make it look so easy? Still, he somehow managed to stumble his way over. And despite his fears, he was able to keep himself from losing his balance and falling to the ground again. If only his diaper didn't push his legs apart so much, waddling around in it wouldn't be anywhere near as hard.

"If Izzy, Pipp, and Misty can walk about in such thick padding no problem, I'm sure I can get the hang of it eventually." The glasses wearing unicorn thought to himself. Then he pushed those thoughts to the back of his mind as he grasped one of the guard rails with a hoof and straddled over it. He landed in the playpen as his diaper audibly crinkled anew. It sounded like the noise echoed everywhere.

But the other three padded ponies didn't seem to care at all. They were absorbed in playing with the toys scattered about the playpen: Izzy was shaking and banging rattles and squeaky toys, creating a childish cacophony. Misty was having a pretend tea party with some of the stuffed animals. And Pipp was stacking large alphabet blocks on top of each other, standing on the very tip of her hooves as the tower she was making steadily grew taller and taller.

Comet wasn't sure what he should play with, there were still lots of stuffed animals and a few toys left lying about the length of the playpen. Trying to think about what a foal might like best didn't help, it just left him in a further confused state. So he just waddled towards the closest object he could find. It turned out to be a large, rubber ball. Unable to think of anything else to do with it, he just bounced it against one of the guard rails, watching as it bounced back to him. The stallion repeated this motion again and again for a while. He thought he would soon grow bored with it and want to move on to something else. But much to his surprise, he didn't. He kept bouncing it, and bouncing it, and bouncing it.

Was this what it was like to get into that "little" headspace Izzy had been talking about?

Comet didn't get a chance to dwell on such thoughts for long, though, because suddenly he became aware of the signs of a full bladder. Come to think of it, he hadn't gone to the bathroom since before he'd left the Brighthouse. Had it been that long already? Or had putting on the diaper somehow weakened his body's ability to hold it? Well, either way, the stallion became quite desperate and stood up!

By chance, Misty happened to notice the strained look on Comet's face. "What's wrong, Comet? Are you okay?" She asked him with sincere worry.

The unicorn stallion with a beautiful arctic blue coat could only reply! "I've gotta go!" Then after stumbling over the guard rail at the end of the playpen, he took off as fast as his hooves would let him! It didn't seem to matter to him that he was frequently slipping and falling! All that mattered was that he reached the bathroom in time!

It was to Comet's great relief that there was a bathroom not too far from the playpen and the changing table. He didn't even care that he ended up racing into the mare's room by mistake, so focused was he on his little "emergency"! He just rushed into the first open stall he could find, not even bothering to shut and lock the door behind him! His bladder felt like it was ready to burst at any second, it was now or never! He hurriedly planted his butt upon the toilet seat, sat down, and sighed as he finally allowed his bladder to empty itself.

Strangely enough, although the stallion could clearly hear a hissing sound, it didn't have the echo he expected it to have from peeing into the toilet bowl. And was it his imagination, or was his diaper starting to grow warmer? Suddenly, it struck the unicorn, who stood up with a gasp! Sure enough, he had forgotten about taking off his diaper, and thus had wet it by mistake! Try as he might, he was unable to stop his bladder from emptying itself fully into the padding, which swelled up as a visible damp patch spread out from the seat of the diaper.

In a matter of seconds, it was all over. Comet's bladder was empty, but his diaper was warm and soggy. Strangely enough, it didn't bother him as much as he thought it would. It still wasn't the most pleasant feeling in the world. But the damp feeling faded almost as quickly as it had appeared, as the glasses wearing stallion's eyes could see the padding soaking up his "accident" with ease. The yellowish tint to the formerly pristine white padding was still faintly visible, but aside from that it would've been impossible to tell at a glance that the diaper had been used.

"Wow!" Pipp exclaimed with surprise when Comet exited the bathroom a moment later. "I know I had to sit on the toilet the first couple of times I tried to use my diaper, but that was always intentional."

A raging blush quickly appeared on the glasses wearing unicorn's face. "I... I didn't mean to."

Izzy was at her fellow unicorn's side in a heartbeat, popping the pacifier out of her mouth in order to talk to him. "Hey, it's okay. It's what your diaper is for, Comet. It's nothing to be ashamed of. Besides, isn't that what a foal would do?"

"I... guess so," Comet blinked rather slowly, before asking. "Should I... get changed?"

"Nah!" Izzy replied with a swish of her tail. "Your diaper looks like it can hold a lot more than that, Comet. And since it's so absorbent, you should be okay for a while without worrying about a rash."

"Trust me, rashes are the worst!" Pipp exclaimed again. "And I know what I'm talking about."

Reassured by his friends' words, Comet returned to the playpen and tried to put his unintentional diaper wetting behind him. That was hard to do when his soaked diaper reminded him of its presence and of his deed, especially when he moved to sit down. It didn't help that the initial warmth he'd felt in the immediate aftermath was starting to fade.

Not long afterward, the sound of rumbling stomachs signaled the end of playtime. Misty was the one to declare. "Sounds like it's time for num-nums."

Izzy licked her lips in delight! "Ooh! I wonder what kind of delicious, nutritious foods are on the menu for today?! I'm so hungry, I could eat a horse!"

Pipp flashed a knowing wink as she again took the lead. "Well, there's only one way to find out! Come on, everypony! To the highchairs!" And one by one, the big foals exited the playpen and waddled their way over to the sized up high-chairs waiting for them.

Comet found it a bit of a struggle to climb into the seat of his high-chair once the bar was unlatched for him. Yet somehow, he managed to wiggle his way in. He was surprised to see Izzy and Misty use their hooves, rather than their horns, as they relatched their bars shut. He opted to do the same. Then, looking across to his friends, he asked them. "So, what are we having today?"

Pipp took the liberty of flying over to the mini-fridge, and returned shortly with several jars of different flavored foal food in tow. With what seemed like practiced precision, she distributed the jars amongst herself and her friends, before landing. Then, unlatching the bar of her own high-chair, she climbed in and re-latched it once she was sitting comfortably in it. "Now everypony remember your bibs." She spoke, promptly fastening a gold laced bib around her neck.

Izzy and Misty also had bibs (which matched their coat colors), and tied them around their necks (Izzy popping her pacifier out of her mouth and leaving it off to one side of her high-chair). Comet clumsily managed to do the same with his bib that was a mix of baby blues and pinks. But as he eyed the different flavored foal foods, he was understandably hesitant. Many of the flavor names didn't sound appetizing in the slightest.

Yet when the glasses wearing stallion glanced over to the occupants of the other high-chairs, he saw all his friends removing the lids on the jars, and dipping their hooves into the different colored goops. They were soon licking their hooves, caring not the slightest for the traces that got on their cheeks. No wonder they were wearing bibs. If they weren't, they were likely to get flakes of food all over their coats.

"What are you waiting for, Comet?" Misty encouraged as she paused momentarily in her eating. "Aren't you hungry?"

The unicorn stallion uncertainly replied. "W-well, yes, but..."

Misty seemed to sense what Comet was thinking, as she reassured him. "Hey, it's okay. Trust me, once you've had a taste, you'll be unable to resist having seconds and thirds! Plus, if it's really not your thing, you'll get a bottle of milk afterwards to wash it all down." Then she went back to licking her hooves without a care in the world.

Reluctantly, Comet unscrewed the lid on one of the jars. He didn't bother to look at the label, he just sniffed the air when the jar was opened. The smell did nothing to convince him that the contents within would be any good. Still, he hesitantly dipped a hoof into the creamy yellow goop, and placed said hoof into his mouth. He shut his eyes and swallowed hard. To say the taste caught him by surprise would be an understatement! He didn't know how or why, but it was so sweet! Never in his entire life had he tasted anything so tasty! Even the hot chocolate he'd been famous for brewing back in Starlight Ridge was nothing compared to this!

So the glasses wearing unicorn stallion dipped a hoof back into the goop, and started experimenting with some of the other flavored foal foods too. They were every bit as delicious! All his earlier anxieties and worries left him, so fixated was he on the different tastes that tempted his taste buds.

When it was all over, Comet leaned back in his high-chair and patted his stomach. He felt nice and full, and let out a hearty belch as a result. "Excuse me!" He exclaimed in only slightly exaggerated fashion.

"You're excused," Misty replied with a giggle. "See, Comet? That wasn't so bad, was it?"

Comet nodded back. "No it wasn't. If stuff like this is what ageplayers and adult foals get to experience, I think I'm beginning to like it. Even wetting my diaper wasn't all bad. I almost can't tell I did it now."

Izzy then spoke up. "Well, the best is yet to come, Comet! Now comes the bottle of milk to help you wash down all your food!"

Sure enough, Pipp flew off to retrieve said bottles and brought them back in the blink of an eye. Unsurprisingly, they were in plastic baby bottles with rubber nipples.

It took a great deal of effort, at least to Comet, but eventually all of the adult foals were drinking down the rich taste of the milk. And soon, the bottles were depleted fully, which to Comet only further contributed to the full feeling in his stomach.

With bellies nice and full, the four padded ponies returned to the playpen for more playtime. Much to Comet's surprise, he watched Pipp "accidentally" destroy her block tower and build it up anew.

But the glasses wearing stallion didn't feel like playing with his ball this time. He instead waddled across the playpen to Pipp's location and asked the pastel pink pegasus princess. "Can I help you build your tower? I think it'll be easier with two."

Pipp smiled, pushing a few blocks towards the stallion with one of her hooves. "See, now you're starting to get it, Comet. It's all about having fun and just letting go. Keep this up, and I know for sure you'll make an excellent livestreaming partner, probably just as good as Izzy."

"What about Misty?" Comet asked as he started helping Pipp stack the blocks up again.

"She's not as big into that stuff as Izzy and I are," Pipp explained. "I think right now she's mostly trying to sort out her conflicting feelings about how she likes to do stuff like this, but didn't like her father treating her like a little filly. It doesn't help that the last time we ageplayed together, it was in Bridlewood with a pony who we'd later learn was her father, and he served as our caretaker more or less. I know I'd probably find it awkward if I was doing it with my mom. Can't imagine what Misty must be going through since finding out Alphabittle was her dad."

Comet blinked in confusion. "How did she not know?"

The padded popstar pegasus shrugged her hooves, pausing momentarily in her construction. "Well, none of us knew at first. I don't wanna get too into details, but it's all tied back to that fire alicorn Izzy mentioned. That pony was basically using Misty for their own goals, and we suspect they did something to block out Misty's memories so she wouldn't remember her past. But Misty ultimately did, so now she's got a whole bunch of conflicting feelings to manage."

"And what about Izzy? It sounds like she would be really close to all of this." Comet questioned.

Pipp just replied. "Izzy seems not to mind the fact that she and Misty might technically be family. From what I understand, her parents either died or left her when she was still very little, and Alphabittle had to raise her all by himself. Now that we know he was Misty's father, it makes sense why he was so good at taking care of Izzy, he already had experience as a parent. As for myself," She could only shrug anew. "I'm not really sure what it was that drew me into diapers. I suppose part of me always has felt like a child, especially when Zipp used to constantly tease me about how small I was. Maybe this was just a coping mechanism that blossomed into something more, or maybe I just feel at home being a little."

The glasses wearing stallion blinked slowly, scratching his head with a hoof as he tried to process the information. "I never really gave much thought to my own childhood. But I do remember that even back when I was in diapers and still had parents, Violet Frost was always there for me. And when I got older and my parents disappeared, she took me in and more or less became like a mother to me," He blushed in spite of himself. "I wonder what she would think of me if she saw me like this."

The popstar pegasus princess giggled slightly, but spoke reassuringly. "She'd just want you to be happy and to have fun. Don't forget, that's what made your species so unique in the first place. But enough talk," She resumed her construction project. "You said you'd help me with the blocks, so let's get back to stacking."

So Comet went back to helping Pipp, all the while reflecting just a little on what she had told him. It seemed like each of his friends that were partaking in this had their own reason for doing so, even though they all had differing childhoods.

Then, suddenly, an ominous gurgling and rumbling sensation in his gut made the glasses wearing unicorn stallion pause. He pressed a hoof to his stomach, now regretting having stuffed his face so full of foal food earlier. He looked down at his diaper in hesitation. He'd already wet it, and it hadn't been that bad. Should he see what using it for the other thing felt like?

Comet's body ended up deciding for him as he tried to decide whether or not he should intentionally use his diaper. His tail hiked upward as he felt himself start to push almost entirely on instinct. He shut his eyes, grunting audibly. Even so, it was very hard to go against years of potty training, part of his body was fighting him every step of the way. At last, however, the stallion felt his gut empty itself fully with one last push. Soon, the stench of manure and methane began to waft through the air.

Pipp was the first to notice the foul odor permeating the area. Yet she didn't seem bothered by it. "Oh, Comet, you messed yourself?" She asked, sounding a tad surprised but not annoyed or disgusted.

The glasses wearing stallion sheepishly replied. "I... guess I did," He tried not to gag as the smell grew stronger, reminding him of his dirty deed. "Wow, this really doesn't feel good. No wonder foals always cry when they do this."

"Yeah, but you get used to it," The pastel pink popstar princess proclaimed. "Still, you should probably get changed now. Don't worry about your dirty diaper. Just drop it in the trash and I'll take care of the evidence later."

So Comet waddled away to change into a clean diaper. It felt like every step he took lasted an eternity. And he could've sworn Izzy and Misty were watching, or at least were aware of what he'd done (even if they didn't say a word). When he at last reached the changing table and hoisted himself on it, he unhappily sighed when he felt his now heavily used padding squish underneath him. Luckily, the changing supplies were readily accessible to horn. "Let's get this over with." He said to himself, as he began to open his diaper, preparing himself mentally for what was to come.

The change into a spotless diaper took longer than Comet would've liked (how he wished somepony else had been doing it for him). But at last, he was clean and smelling nice again, the smell of cornstarch was far more pleasant than manure or methane. It was the one thing about being an adult foal that he had rather disliked. If possible, he would probably not ever mess himself again.

Fortunately, the rest of the day after that passed without any further "accidents" for Comet (either wet or messy). He was only slightly surprised to see Izzy and Pipp do what he had done, and only a bit more surprised when Misty ended up doing the same. He found himself wishing he had that kind of a bond between them. Still, for his first time as an adult foal, he felt he'd done a good job.

Climbing into one of the cribs that evening and lying on his back, the glasses wearing stallion tried to sort out his thoughts and determine for himself whether he would do this sort of thing again.

Unable to come up with a satisfying answer, Comet decided to sleep on the issue. At least with a diaper on, he didn't have to worry about getting up in the middle of the night to use the bathroom.

But Comet was not the only unicorn contemplating something that night. Misty and Izzy were also thinking of their own dilemmas, and how best to go about them.