Welcome to a new fic! This will be my first smutty post, and I'm very excited about it. I'm actually into girls, but sometimes Klaine smut is just delicious. Hot is hot, and I am able to appreciate that. I hope you find this hot as well. A few things you should know;

Blaine is taller than Kurt in this fic. It just feels more right for this, so keep that in mind.

Kurt looks like he did in Season 4.

I will not be including kinks like scat or bloodplay! However I will be including I think at least one watersports thing, so if you're not for that, skip that chapter when it comes along.

I had to do a lot of research to find kinks for each letter, so I'm sorry if some of them are a stretch, I tried. For Z...I didn't want to do zoophilia, so yeah.

Blaine will use pet names such as "toy" "slut" and "pet" interchangeably. Essentially whatever I think is hot for a dom to call a sub. Kurt, of course, enjoys all of these names, as consent is very important in any relationship. It's all part of their dirty talk.

That's pretty much all you'll need to know.

The obligatory:

I don't own Glee, or any of its characters. Do you think I'd be writing fanfiction if I did? LOL.

Chapter One: A is for Anal Training

"Kurt, remember how you were asking about trying new things in the bedroom? Like, kinks?" Blaine asked one day, sipping his coffee casually.

"Yes, I do. Why, Blaine?" Kurt asked. Blaine could tell from the look in his eyes that he was already excited.

"Well, I was thinking, and I got an idea. I think you'll like it."

"Well you have my attention."

"What if we, every so often, tried a new kink, according to a letter of the alphabet?"

"Yes. Definitely yes."
_

Beautiful, Blaine thought, tracing his eyes over his submissive's body. Tapered and thin, especially at the waist; long, long legs (Man, they stretch on for miles, Blaine thought); and he was entirely and completely smooth and hairless. Blaine had never seen a person who looked more like he was made of porcelain, and if Kurt didn't pull it off then the sky was red.

Not only was Kurt Hummel's body naturally beautiful, but damn did it look good bound in a position Blaine had determined before. He was against the wall of their expertly built "playroom", a room full of all sorts of fun sex toys they had both bought-whips and chains and dildos and butt plugs and machines, etc. He was suspended midwall, with his legs tied above his head and his arms as well, exposing his cock, and more importantly his pretty, dusty pink hole. The focus of his attention for tonight's scene. And boy, was the dom excited for the activities that would soon be beginning. Blaine slowly strode up to Kurt, whose eyes were wide with anticipation, sparkly and blue. The dom was smirking.

"Hey, slut." He said, withholding the urge to trace his finger down Kurt's body.

"Hello, sir." Kurt replied timidly. Blaine watched in amusement as his boy's eyes darted around, looking for what his master might be looking to do to him tonight. Now don't get it twisted-Kurt was entirely consenting in these scenes. He had safewords, and consent was always valued. However it was exciting-and even a little nerve-wracking, to find out what they would be doing. Especially now that they were trying one of their alphabet kinks, and Kurt didn't know what it was.

"I'm sure you're wondering what our scene will be about today, aren't you, baby?" Blaine asked, petting a hair through Kurt's beautifully coiffed chestnut hair. His sub shuddered.

"Yes, I am, sir." Kurt replied.

"Well then...since you're a smart slut, I'm sure you remember today is the first day of our alphabet of kinks. And you went to kindergarten, so you know A is first. What do you think A could stand for, toy?"

"I don't know, sir. Maybe something with anal, sir? Would you please tell me?" Kurt asked, batting his eyelashes. Blaine's cock jumped to attention a little. He loved when Kurt got playful in these scenes. It showed just how much his beautiful pet enjoyed this. And that was one of the most important things to Blaine.

Blaine chuckled. "Good boy. You're so smart-it is something to do with anal. This is a kink I know you've been interested in for a while, slut. You've asked me about it once or twice." Blaine looked into Kurt's eyes and saw them swimming with excitement. The dom guessed his toy had just figured out what was going to happen. "That's right, my little slut, we're going to be trying anal training. We're going to make your tight little hole take as much as it can. Shove huge things up it, even bigger than my cock. I bet you'll like it, forcing your little hole to its limits, making you scream my name till your voice goes horse. If you want, we can make it routine, and do it all the time, 'till you're easy access for me to fuck whenever I want, like a good little slutboy. Does that sound good, toy?" Blaine asked, patiently waiting for a response.

He saw his sub swallow and nod quickly, eyes blown wide and glassy with lust and thrill.

"I need a verbal response, Kurtie." Blaine said, slapping Kurt on the cheek, who shivered. Blaine chuckled lowly. His little painslut.

"Yes...I'd love that, Master." Kurt said quickly. Blaine allowed the smirk back on his face.

"Good boy. Remember, your safewords are for you to use whenever you need them or want them. That's why we have them. What's your safeword?"

"Freebird, sir." Kurt answered, not missing a beat. Blaine let out a snicker. His sub was ever so eager.

"Good. Should we begin, slut?"

"Yes."

"Okay. I'll be right back, baby. Let me grab a few things." Blaine left and headed over to their toy chest. He could see in his peripheral vision Kurt trying to twist his head to see, but he couldn't quite do it. Blaine laughed softly under his breath. A few moments later he returned to his pet with a box of a few things.

"I bought some new plugs for this, toy," Blaine told him with a smile. "The smallest one is already bigger than anything you've ever taken, but I know your greedy little hole can take it. It was just made to be stuffed."

Kurt whimpered.

"So what should we start with, pet? The smallest one, or my personal favorite, the inflatable?"

Kurt gasped out a little. "I-inflatable?"

"Yeah, baby...I got an inflatable plug so I can stuff your ass as full as it can be. But we can start real small, work our way up. And since you didn't answer, I'll decide for you. We're going to start with the smallest. We'll end with the inflatable, okay pet?"

"Yes, sir."

Blaine smiled at him and kissed his cheek. The smile quickly turned to a smirk as he crouched down, now at eye level with Kurt's hole. He reached into the box, fumbling around for something until he found a clear plastic bottle and smiled. He flipped open the cap and squirted the lube onto his fingers. He reached his right index finger up to Kurt's puckered hole and circled around it. He felt his pet shiver under his touch but he didn't stop; instead he felt that as a sign of encouragement (which it definitely was.) Stroking the rim lightly, he looked Kurt in the eyes only to find them closed with pleasure. Blaine knew Kurt loved it when his rim was touched, though the sub had once described it as pleasurable torture, always wanting more and more. "Open your eyes, slave...I want you to see what I'm doing to your tight little hole. Watch it swallow up my fingers baby, come on. Greedy little fucktoy...greedy little hole." Blaine commanded. Kurt let out a small whimper that was music to Blaine's ears (and cock) and his eyes opened to look down. He let out a moan as Blaine slipped two fingers in Kurt's hole, which just like he'd said, swallowed them up hungrily. Blaine laughed. "Oh, baby, such a slut for it, aren't you? Your hole takes my fingers like it's nothing. Not at all like the first time. Just takes it like it was meant to now. So used. Made to be used."

Slowly he thrust his fingers in and out. He pressed forward as far as he could and then dragged it back, nearly removing it but not yet.

"M-more…" Kurt whispered as Blaine's fingers brushed against his prostate lightly-torturously lightly.

Blaine increased the speed but did not add another finger, so it wasn't enough for real pleasure-the overwhelming, brain-shattering, vision stealing kind Kurt was searching for.

"Beg for it, slut." he said instead. "Beg for it like a good toy and I'll consider it."

"Pl-please, Blaine-" Kurt paused momentarily, mouth hanging open, at a particularly hard pressure to his prostate, before continuing. "Please sir, more, more, please, I'm a slut, your slut, just give me another!"

Kurt knew just how to beg, letting out high pitched little cries between and being completely submissive and desperate. And this was just a warm up. Blaine's cock jumped at the thought, even though he was already fully hard. Not yet though-he pushed a third finger into Kurt's hole, and then another. Kurt cried out a little but took it like Blaine had taught him to.

"Good boy, good boy." Blaine said. "I think you're almost ready for the first one. You're not fully stretched enough for it...but it's meant to burn a little. That's part of the pleasure for you, isn't it my little painslut?"

"Y-yes sir, I love it, sir." Kurt forced out through gritted teeth. The speed of Blaine's thrusting only increased at Kurt's beautiful reactions, pressing him up against the wall even more.

"Say it, baby. Say you're a painslut."

"I-I-I'm a painslut sir, such a painslut!" Kurt said. "I lo-love it when you fuck me hard, o-or whip me, or...or..ah...so good…"

Kurt's words were stopped when Blaine pressed his thumb into his hole. It was true, Kurt's hole had already been stretched quite a bit before. The two weren't strangers to the world of fisting. Kurt had loved it when Blaine shoved his fist up his ass, but fisting wasn't near what Blaine meant by anal training. Blaine meant stretching his sub's ass until it was gaping wide, begging to be fucked hard like the slut it belonged to. If Kurt wanted, they could even continue the process. Make it so Kurt would need to wear a plug everywhere he went, just so he wouldn't make a mess...even if not, just to make him easy access to Blaine at all times. Maybe even keep Blaine's cum in him all day.

Oh God, Blaine could have cum at those thoughts, right in his pants. He restrained himself though.

After a few more thrusts of his fist, Blaine removed his hand from the hole. Kurt whined at the loss.

"Don't worry, pet. I'll be giving you something even bigger in a moment." He reached into the box again and pulled out a glass plug, just a little bigger than his fist. He watched Kurt's eyes looking it over. "Does that look good toy? I'm sure it does. You might be wondering why I chose glass. Well that's because it's one of the most unforgiving materials plugs come in, so your ass will have no choice but to take it. It also is a bonus that I'll be able to see through them into that gaping hole of yours."
"M-master-" Kurt began.

"Shh." Blaine said, and bent down again. He smothered the plug in lube and then pressed it at his sub's rim. "Ready baby?" Kurt's nod was enough this time, and Blaine pressed it further. The hole did not swallow it like it did his fingers, but it did do its best to stretch and accommodate it. Kurt cried out as the biggest part of the plug pressed past his entrance and then the rest slid in with a pop.

"Oh, good boy. Good little fucktoy, hmm?" Blaine said, watching it all happen with a fascination of sorts. "Want me to fuck you with it, babe? Push it in and out of your slutty little hole until you cum without me even paying the slightest attention to your hard cock?"

Kurt let out a gasp as Blaine twisted the plug in his hole. "God, yes, please...please, I need more-" He breathed beggingly.

"What's that? I couldn't hear you," Blaine growled, starting to thrust the toy in and out of his sub's already widely stretched ass. "Say it again."

"Please, ma-ASTER!" Kurt gasped again with a particularly hard shove. "Please fuck me, sir-OH!-plunge it in and out of my dirty, slutty little-GOD!-hole. Ruin it, make me shut up and take it sir-Oh so good, harder sir, harder!"

The sounds Kurt made were absolutely delicious. Over the course of their adventure in the world of BDSM, Kurt had learned dirty talk just as well as Blaine, only Blaine's was possessive and dominant, while Kurt's was pleading and submissive.

The more Blaine fucked his sub with the plug, the closer he saw him getting to release.

"Master, master, sir, I'm gonna-"

Blaine pulled the plug completely out of his sub, who whimpered and whined at the loss.

"Sir, please, I want-"

"No, toy. We have more plugs to use on you." Before Kurt could say another word, Blaine had shoved a new lubed plug in his hole, and it was even bigger than the last. Kurt screamed out and Blaine smirked before he began plunging this one in and out and twisting it around. Kurt let out cries and little whispered begs at each and every thrust, until he once again neared his release and he pulled it out, leaving his sub with a gaping and fluttering hole. He had never been stretched so wide, and if that wasn't turning Blaine on...

"Sir, please, please fuck me, please let me cum, sir, please-"

"Shh. We have one more plug and then you can cum, okay pet?"

"O-okay sir," Kurt whimpered.

"Good slut."

Blaine smiled as he reached into the box and pulled out the last item. It was an inflatable plug, which could stretch to the size of Blaine's head-not that he planned on doing that to his sub, because that might break him. But another thing about the inflatable plug was that it vibrated. However, his sub wouldn't know that until a little later.

A moment later, Blaine made a new choice.

"Actually, babe, you can cum really soon. I'm gonna fuck you with my cock. Your pretty little hole looks so delicious to fuck right now, all stretched wide and gaping. We'll use the inflatable plug after I fuck you, okay, slut?" Blaine asked. His cock was too hard to wait anymore.

"Yes, sir, please, use me, fuck me, please." Kurt said eagerly, wiggling his ass a little to prove his readiness.

"Okay toy." Blaine stood from where he crouched and unbuckled his pants. His cock sprung out-he hadn't been wearing underwear. Quickly he lubed his cock, and too eager for anything else, he rammed into his sub's ass. Kurt screeched slightly before settling into the pace of his master's thrusting. Kurt's hole felt loose and yet so tight at the same time. Blaine had never felt anything better. He was really starting to hope that Kurt would agree to a more long-term anal training process, because damn was it starting to look good.

It wasn't long before Kurt reached his release, shooting white liquid all over his own chest and screaming his master's name. But Blaine did not cease his own fucking-no, he hadn't come yet. And Kurt knew all too well that Blaine would not pull out until he was finished using his sub. He knew his sub was probably crackling with oversensitivity, but Kurt was a painslut, like mentioned before, and had said a few times that he had a thing for oversensitivity.

"Ugh, such a good boy. Take it so well, fucktoy. Such a greedy little fucktoy, always so eager..."

Soon enough Blaine shot his load into his sub's ass, kissing his boy's neck. A few moments of the both of them and Blaine pulled out. "Keep it in, pet. I'm gonna plug all my cum up in there." He said and waited for Kurt to clench. When he did, he reached down for the inflatable plug and, using the cum as lube, slipped it in.

"Woah, you took that even easier than my fingers. Looks like these plugs are working, huh, slut?" Blaine asked. "Ready for me to make it huge? Stuff your ass fuller than it's ever been?"

"Yes, sir, I'm ready sir."

"Okay, just tell me if it starts to hurt. Not that that should be a problem-your greedy hole is stretched so much."

Blaine reached down for the pump and began pressing it. At first the pumps were frequent and fast, but he slowed them down after a while when it was visible how big it was getting. Finally Kurt cried out, and said "Master, ow! Ow that hurts!". Blaine looked at his hole and could see the plug was stretching Kurt. He was satisfied with that.

"Okay, baby. I have one last surprise for you."

"Yes, sir."

Blaine pressed a little button on the remote he had picked up. His sub tensed as he felt the vibrations begin to pulse through him.

"B-blaine-"
"It goes higher, too. I have a remote-it works from very far away. Which is convenient, since I want to go get coffee soon and you won't be coming with me." Blaine said,

"N-no! Please, so sensitive, sir!"

Carefully Blaine listened for the safeword but when it didn't appear, he smirked and patted his sub's ass before heading for the door. He turned the playroom's knob and opened it, before turning back to his sub. "Enjoy, my little fucktoy. And don't be scared to cum."
He left the room and closed the door. As he headed for the exit of their house, he could still hear his sub crying out. But he knew Kurt was enjoying this just as he was.

After all, there was no "Freebird" coming from his little fucktoy's lips.

So, did you enjoy? I wrote this to Call Me By Your Name by Lil Nas X and honestly it was enjoyable, though I wanted to finish it and post it to see what ya'll thought. Hopefully you liked it.