(Suggested by zero_filibuster. Hope this is to your liking, dude.)
(AU, where the Dragonets of Destiny are kept in their cave even longer)
When the adults are away, the dragonets get to play. That had been the rule down in the cave as long as the Dragonets of Destiny could remember. When Kestrel, Webs and Dune went off to go get food or do "adult dragon stuff" (which sounded increasingly dumb, now that they were basically adults already), the DoD would get to do all the fun, rebellious stuff their watchers would never let them get away with. This could be innocent things, like mocking their teachers or attempting to escape. Other times, they could be "dirty" things, like getting into their guardians' pornographic scrolls, and trying out some of the things they saw themselves.
Or at least, the girls did. Tonight, for example, Tsunami and Glory and Sunny were off in their dorm, having an awesome threesome while Starflight and Clay had to stay out and "keep watch" in case their guardians came back early. Clay wasn't too bothered by this - after all, someone had to stand guard, and he was happy that his friends were able to have fun. Starflight, meanwhile, was less enthusiastic. Despite his best efforts to hide it, it was no secret he had a pretty big crush on Sunny, their weird and lovable little Sandwing. Clay thought she was cute, too - they all did - but the Nightwing loved her something fierce. So the fact that they were stuck watching the stone door, while also hearing the moans and roars of the girls going at it... well, even Clay was starting to feel uncomfortable and awkward.
On top of that, Starflight excused himself to "go to the restroom" about fifteen minutes ago, and Clay was starting to get worried. He didn't think the Nightwing was going off to do anything crazy, but it wouldn't hurt to go check on him all the same.
"Starflight?" He called out, looking around as he went by a small chamber that served as a storage chamber. "Starflight? Where are you?"
"Clay?" The Nightwing replied, his voice sounding shaky and winded. "I-I-I'm okay! You uh, you go back to the doors! I'll be-be back in a little bit, alright?"
"Starflight, what's wrong?" The Mudwing asked, stopping outside the chamber's entrance. "You've been here for a really long time."
"I-I'm fine!" Starflight insisted, sounding anything but. "I'm just, uh, taking care of something!"
"Taking care of what?' Clay asked, entering the chamber. "C'mon, Starflight, you can tell me. I can help y-"
Clay stopped. In the storage chamber, Starflight was sitting in a corner behind some crates. In front of him was an open scroll, propped up with some rocks. The Nightwing had quickly turned and covered himself with his wing, but he was able to catch a glimpse of something long and pink between his legs.
"Starflight?" Clay asked. "What're you doing in here?"
The Nightwing sighed. In the distance, Clay could hear their lady friends moaning lustfully from their chambers. As the Mudwing got closer, he could see the scroll, and noticed the pictures of dragons in very... interesting positions.
"Were you... jerking off?" Clay asked, rather surprised. He figured that the Nightwing (like the dragonesses) were doing that anyway, in private, but catching Starflight in the act - arguably the least sexual dragon beside Sunny - surprised like a sudden updraft.
"I just..." Starflight sighed. "I've been looking forward to this night for weeks. I was going to tell Sunny how I feel, make a move, maybe even... I dunno. But then Tsunami had to go and suggest that they have a 'girl's night', and I was too much of a coward to stand up and fight for what I wanted. Now I have to listen to her and Glory fuck Sunny senseless, and all I have to make up for it is some old erotic scrolls. It's so unfair!"
The Nightwing's wings drooped, and Clay got his first good look at his friend's member. It was thin and pink, bobbing about as he moved. It shined in the torchlight above them, drawing Clay's eyes as Starflight lamented his situation. Outside, Glory was howling with delight, and suddenly the Mudwing had an idea.
"Do you..." He began, choosing his word carefully, "Do you want help with... with that?"
Starflight looked up, confused. "What do you mean?"
Clay sighed, gathering himself, drawing up to his full height. "I want to help you," He explained, taking a step closer, "With your problem." He nodded to his friend's shaft, which was now starting to pull back into his sheath.
The Nightwing blinked, and finally realized what his friend was suggesting. "Wait, what?" He asked, shocked. "You can't be serious? We can't do, I mean-"
"What?" Clay demanded. "The girls are having fun with each other, why can't we do the same?"
"Yeah, but Clay, I'm not into boys." Starflight insisted. "You're my best friend, but I love Sunny."
"I know that. I'm not trying to replace her. It'll just be a little bit of fun between the two of us. If you don't like it, we'll never have to bring it up again. Besides, Sunny's getting some experience out there. If you ever get serious with her, shouldn't you know what to do and how to do it?"
Starflight considered this. There were stories in the erotic scrolls that not only talked about two dragonesses mating with each other, but two drakes as well. While sometimes they'd be lovers, other times they were just close friends finding comfort with each other away from their mates. It'd be a secret, one-time thing between two (mostly) straight dragons working out their frustrations, nothing more. If Clay wanted to help him with his problem - and Three Moons, his cock and balls were aching in desperate need for release - what would be the harm of letting him?
"...Okay." The Nightwing relented. "We can have sex, if you really want to. But let's stay away from the butt-stuff. There's no way I can take you, and I don't know if I want to do anal or not."
"That's fine." Clay said, gesturing down to the scroll. "Maybe your scroll has something else that we can do?"
Starflight, looking thoughtful, went to his scroll and began changing the page. "Mudwings, Mudwings," He muttered, "Ah, here we are, Mudwings. Oh... how about this?" The Nightwing spun the scroll around, showing Clay. There was a drawing of two dragons, one Mudwing and one Sandwing. The smaller Sandwing male was mounting the Mudwing's head, cock entirely in the other's mouth. The caption underneath read "Face-fucking".
"It says here that Mudwings are great at oral sex," Starflight explained, "Because they can hold their breath for so long, and lack a gag reflex. Their tongue is also bigger than every other tribe. Yeah, do you think we can do this?"
"If that's what you want, definitely." Clay agreed, leaning down so his head was at Starflight's chest. "Climb on."
Starflight approached him, holding his head high to hide the blush blooming on his face. One paw pressed on the Mudwing's shoulders, then another, and then Clay's vision was filled with black scales and dragon dick. Musk filled his nostrils, as hot pink flesh booped his snoot. Moisture dribbled onto his nose, clear and stringy. His tongue rolled out, and he gave the penis an experimental lick. It was salty, musky, with just a hint of bitterness to it. Almost tastes like mine. Clay thought approvingly. This'll be easy.
Opening his mouth, his tongue wrapped around the Nightwing's cock and pulled it into his mouth. Starflight moaned loudly, squeezing Clay's neck tightly. This was so much better than his own paw. So warm, so wet. When the Mudwing's mouth became a tight seal, his hips began to buck. He tried to picture Sunny beneath him, penetrating her tight snatch, screaming out his name as he bred her. But as the room filled with slurping sounds, big strong muscles shifting under his arms, and the Mudwing humming happily around his cock, the reality kept pushing through his fantasy. And yet, as Starflight buried his face in Clay's back and whined, he couldn't help but be drawn into this moment.
I'm fucking a drake. He thought. No, I'm losing my virginity to my best friend. He's making me feel good. I should... I should return the favor, when I, I...
It was almost embarrassing, how quick Starflight felt his orgasm approach. He'd been working himself for sometime before, but his endurance was still weak, and Clay's mouth felt amazing. His pace quickened, as slurping, sucking sounds filled the air. If the Mudwing felt any discomfort for his nose getting repeatedly squashed, he gave no sign.
"Oh C-Clay," Starflight stammered, his grip tightening around the Mudwing's neck, "I'm gonna, I'm gonna, I'm gonna-" With a deep, throaty groan, he came. He penis twitched, pulsed, and a hot, sticky jet of jizz shot into Clay's mouth. With each buck, more and more Nightwing semen landed on his tongue, coating the back of his throat. He swallowed, drinking deeply as seed flowed down into his gullet. Clay tried to savor the taste as best he could, continuing to suck off his friend as the Nightwing gave a few more half-hearted bucks as his orgasm ran its course.
"Oh, Three Moons," Starflight sighed, as the last drops of cum dribbled out, "That was the best climax I've ever had. Thank you, Clay."
The Mudwing spat the cock out of his mouth, licking up the loose seminal fluids from his lips. "No problem." Clay said. "Glad I could help."
Starflight hopped off Clay's neck, wobbling for a half-second as he regained the feeling in his legs. His eyes wandered down the Mudwing's body, when he noticed something that caught his breath. "Whoa!" He declared, eyes wide. "Clay! You're HUGE!"
"Hmm? Oh, yeah, I guess so." Clay looked down at himself. He hadn't noticed himself getting aroused while working the Nightwing's member. It was indeed rather large, maybe slightly above average even for Mudwings, and easily the size of Starflight's forearm. It throbbed with need, soft fleshy spikes ringing the "head" of his cock and trailing down to his swollen base.
"Hey, um, Clay," Starflight asked nervously, "Do you need, uh, any help with that?"
Clay looked down at his length, then back at Starflight. He started to say that there was no way, that he was too big for him, when he suddenly had another idea. "Actually," He added, "There is something you can help me with."
"Sure, whatever you want." The Nightwing insisted. "I'm willing to try anything."
Clay went to a nearby wall. He got down onto his back, rolling himself up so that he was upside down, shoulders on the ground and penis dangling above his head. "I've been trying something for awhile now." He explained. "I'm big and flexible enough that I can suck myself off, but what I really want to do is penetrate myself with my own tail. I can't move my tail the right way, and I can't reach far enough to suck my dick and ride my tail at the same time. But maybe you could help me with that?"
"...You want me to fuck you with your own tail?" Starflight asked, looking rather surprised and confused.
"Well... Yeah." Clay said, suddenly feeling embarrassed. "I mean, you don't have to if you don't want to."
"No, I do. I do want to make you feel good. I just... I've never heard of anything like this before. But I'll help you do this, no problem."
Starflight stepped up to the Mudwing, sitting up to get a better grip of his thick, muscular tail. He read in some scrolls that you could tell things about a drake's penis based on their tail, and he started to believe that it was true. His own tail was long and thin (much like his own length), while Clay's tail and cock were both large and thick, almost intimidating. He doubted Tsunami or Glory could handle all of him, let alone Sunny or himself. Maybe Kestrel, if she wasn't such an irate bitch.
The Nightwing then realized Clay was going to need some kind of lubricant. He couldn't just shove his tail straight into his ass dry; That could really hurt him! Looking around the room, he found a container filled with pig fat, which was used as fuel for the torches. Better than nothing. He thought, grabbing a pawful and rubbing all around his tail. Once much of his tail was nice and slippery, Starflight took his friend's tail in his paws, pulling and curling it until the tip was angled over his anus. Clay assisted, pulling his hips down, his huge cock dangling above his snout. When it was almost touching his nose, he craned his neck up, his tongue guiding it into his open maw. Starflight shoved the tail into Clay's vent, meeting some resistance but still sliding right into him. The happy, pleasured moan Clay gave with a mouth full of himself sent a chill down the Nightwing's spine. Three moons, this is so weird. It's hot, but still weird.
And as weird as it might sound (even Clay had to admit it was kinda odd when he thought about it), he really liked the taste of his dick. He liked the taste of his cum. He liked that he could do something most drakes wished they could do. And he liked that he didn't need to get a girlfriend to get a blowjob, when he could do it himself. His next partner would have a lot to live up to.
Clay bobbed his head back and forth along his length, as his friend shoved his tail up and down. He wiggled his tailtip around, trying to find the most sensitive spot inside himself. He hummed and whined happily, losing himself to the pleasure of the moment. Three moons, this feels amazing! The Mudwing thought, his tongue circling his tip, his tail stretching his virgin ass. I've got to do this again. Maybe I could teach Tsunami and Glory how to do this. That could be fun. Or even better, next time Kestrel's gone, we all get together for some fun. I wouldn't mind showing the girls some love. Mmm, I'd love to be in a threesome. Filling up Tsunami, getting filled by Starflight. Ohhh it makes... me... wanna...
He motioned Starflight to pick up the pace, as he bobbed his head even faster. He felt himself approach the edge, the pressure inside getting bigger and bigger. His tail wiggled inside, and he struck paydirt as it brushed his prostate. Here it cums! He pushed himself up as far as he could, deepthroating himself as he felt his tip poke the back of his throat. His muscles tensed around his tail, around his nuts, and he blew his load right into his gullet. He held his position for the first three jets, his seed mixing with Starflight's in his stomach. By the fourth, he had to pull back, and he filled his mouth in one go. By the fifth, he fell back, and he covered his face in his own dressing. By the time he was finished, he was soaked in sticky sauce, exhausted yet satisfied.
Starflight pulled Clay's tail out of him with a Schlorp!, ignoring the "residue" on the tip. "Clay," He asked, "How was it?"
"...Good." He sighed, licking his lips clean. "Really, really good. Like eating an entire cow by yourself good. Thanks for helping me out." The Mudwing looked around, and frowned. "I made a bit of a mess, didn't I?"
"Yeah. We should clean up before our Guardians come back." Don't know what we're going to do about the smell, though. Starflight thought, as he picked up some rags. It'll take awhile for the smell of ass and semen to clear out of this room. The two dragons cleaned up the puddle of sticky stuff quickly enough, and (seeing that so much remained on Clay's neck and face) both decided to head over to the stream to wash themselves off in the cool river water.
"Hey, Starflight," Clay said, as they walked down the hall, "If you want, I wouldn't mind doing that again sometime."
"I... I think I'd like that." Starflight admitted, smiling like a goober, his tail swishing happily. "We could try other things as well, if you're up for it. Maybe even... get the girls in on it?"
"Yeah, definitely." He nodded. "I'd love to have fun with the girls, if they're up for it." Each of them imagined how that could go - Starflight, with Sunny's tongue wrapped around his cock; Clay, with Glory moaning his name under him. So enthralled were they with their daydreams, that as they went to the river, neither of them noticed a funny-looking Sandwing watching them pass by. What neither drake knew was that Sunny had left her friends to go to the bathroom, and had stumbled across the two males as they were in the middle of... well, all that. It was surprising, though maybe not as much as she would be if she hadn't been sixty-nining with her friends. It was hot, knowing that all her friends were having sex with each other so close to each other, and not even knowing it. It gave her an idea, an idea that she had to tell Tsunami and Glory right away...