Author's Note

kinks included Futa on Femboy, cumflation, stomach bulge, and domination

Confidence Teacher 18+

“I want you to fuck me,” Rainbow Dash replied. “How much more obvious can I be? Do I have to send you a written invitation or something?”

“N-nno! I was just surprised by the rudeness of it all,” Twilight replied, waving her forehooves in the air.

“Well,” Rainbow Dash began, wiggling his butt in emphasis. “What are you waiting for?”

“Right, of course. One sec,” Twilight muttered.

The unicorn awkwardly leaped atop the bed, nearly catching her mammoth cock on the lip of the bed. Forcing her to awkwardly stop mid-jump and grab her dick with her magic, hoisting the thing against her stomach. With that done she finally ascended to the pillow top, where a smirking Rainbow Dash was already waiting for her.

“Alright then,” he remarked. “They told me you had a big one but hot damn are you packing. I haven't seen one that big since I took a peek under the skirt of my home ec teacher back in ninth grade.”

Twilight blushed. “Well, I did suffer a rather large magical surge when I was younger so certain parts of me grew a bit faster than others. It was quite annoying, let me tell you.”

“You know what else is annoying?” Rainbow Dash asked.

“What?” Twilight replied.

“When you're laying all spread eagle in front of someone and they refuse to put their dick in your butt!” Rainbow Dash shouted at the top of her lungs.

“Alright alright, relax. Sheesh,” Twilight murmured, a hoof rubbing the inside of her ear.

“Damn persnickety unicorns. Never do a gosh darn thing quickly,” Rainbow Dash muttered under her breath.

Twilight rolled her eyes, and just focused on the task at hand, namely fucking the attractive femboy before her. And he was attractive, with a toned, athletic body that was still nonetheless quite feminine, and alluring. His hips were wide, his mane long, and when he looked away Twilight could have sworn he was actually a girl.

All in all, it was an erotic sight, one that caused Twilight's dick to smack meatily against the underside of her torso. The flame first sparked by being so close to Celestia grew to a raging inferno as a heaping helping of femboy booty was tossed on top. It nearly made Twilight lose her cool, but the unicorn restrained herself just enough to contain that particular urge.

Refocusing that desire into action, Twilight cast a quick grease spell on her cock. Now slick with an unnaturally perfect lubricant, Twilight's cock pressed against Rainbow Dash’s pert asshole. Guided in by the unicorn’s magic, Twilight expertly aligned her dick, the wide flat head pulsing needfully against the pegasus.

“Fucking put it in already,” Rainbow Dash cursed.

Twilight grit her teeth, and pushed back the urge to fire off a retort of any kind, though it was tempting to do so. Instead, she quickly concocted a plan, one that didn't exactly have a lot of steps, nor did it need many. Twilight simply drew back her hips slightly, tensed her muscles, made sure she was lined up, then threw herself forward.

With her jaw clenched tight, Twilight rammed herself deep into the pegasus’ guts. The enormous, broad head of her cock spread the young male’s insides like a plow through a field. Aided by the grease spell, and all the strength Twilight could muster, she managed to sink halfway into Rainbow Dash in a single shove.

It was an incredible feat, one that none of Twilight's ex-lovers had ever managed, even at their most horny. She expected to look down and find shock, or confusion on Rainbow Dash’s face, but that wasn't what she discovered. Rather she found that the male although enjoying himself, was unsurprised, and looked expectantly up at Twilight.

“Not bad for a first- unf- thrust, but you're going to have to do better than that,” Rainbow Dash remarked, using her free wing to flick Twilight in the face.

“Bwuh, what?” Twilight muttered.

Rainbow Dash rolled her eyes. “Oh come on, this is Celestia’s school. Did you really think there was nothing but virgins here? Now you better fuck me before I get bored and go find someone who can.”

Twilight grit her teeth and tightened her jaw, the unicorn shutting out all thoughts not centered on sex. Rainbow Dash wanted to get fucked, well Twilight would give him all she had to offer and then some. With that thought firmly in mind, Twilight adjusted her stance, shifted her hooves slightly, and angled herself downward.

With a fresh wave of determination giving her muscles newfound strength, Twilight thrust once more. Short, but powerful the push didn't last long before Twilight stopped, shifted forward, and thrust once more. This quick, but short method bore fruits quickly, as Twilight soon managed to stuff nearly the entirety of her cock into her new partner.

Even the medial ring managed to slip inside, requiring only a single push in order to get past Rainbow Dash’s asshole. By the time Twilight had to shift forward on the bed, she was nearly all the way in and Rainbow Dash had yet to make a sound. Not a moan, grunt, or even a whimper, in fact, the pegasus seemed to be growing bored and was doing a good job at hiding how much she was enjoying herself.

The bored look on Rainbow Dash’s face was enough to spurn Twilight once again, pushing her to greater heights. With her resolve steeled, Twilight gripped the bed tightly and thrust the last remaining few inches of her dick into Rainbow Dash. Now with enough futa meat inside of him to lift the stallion from the bed, he shuddered in pleasure, though it was brief.

Twilight noticed the large bulge the head of her dick made in Rainbow Dash’s belly. She also saw that the pegasus’ still mostly soft cock was dribbling a thick, viscous pre cum onto the bed. Though enjoying himself, Rainbow Dash still seemed unimpressed, and merely looked up at Twilight with a bored expression.

Not one to rest on her laurels, Twilight pushed on, pulling back, and thrusting into the stallion once again. As she repeated this motion over and over, she took a moment to enjoy just how tight yet welcoming Rainbow Dash’s hole was. He was well trained, that was for certain, as he squeezed down on the cock inside of him the perfect amount.

Just enough to be an active participant in the act, yet still looking bored by Twilight's attempts so far. Twilight resolves to wipe that look off of his face and began to thrust in earnest this time. From her forehooves to her lower back, Twilight put everything she had into fucking the smaller pony.

The bed creaked, her limbs began to burn from exertion, and her breathing was labored but Twilight felt good. The stallion between her legs could barely even be called male and had the perfect hole for thick futa cocks. He may not have been the most active participant, but he wasn't trying to be, at least not yet.

She was being observed, measured, and she was determined to give the best show she could. So the unicorn really put her all into it, thrusting as hard and as fast as she could manage. It may not be a sex Olympics competitor but Twilight felt proud of herself and even managed a grin that lasted until Rainbow Dash spoke.

“You fuck like you need a new hip,” he remarked. “Come on, if you're not going to give it to me then pull out and fuck off. I know more than a few alpha futas that are always ready to fuck.”

Twilight grit her teeth and glared down at the pegasus. “You… But I…. augh!”

The unicorn released an annoyed cry, her emotions quickly getting away from her. Anger, frustration, and built-up resentment all stemming from Cadance’s betrayal all boiled back to the top. This potent cocktail of feelings mixed into a burning miasma of indiscriminate rage just looking for an output.

Which it soon found, turning Twilight's mane into a crackling, raging inferno that licked at the ceiling. Her fur lost all color, and her eyes began twin orbs of scarlet that glared down at Rainbow Dash. All trace of the thoughtful and empathetic pony was gone, replaced by what looked like a demon born from the pits of hell.

“Woah what's with the illusion spell are you trying to impress me?” Rainbow Dash quipped.

Twilight's eyes narrowed, and her flaming mane burned low, turning from orange to a deep blue. Her hips then began to move, slowly at first but then faster and faster, and faster, with no end in sight. In seconds she had surpassed her old speed and was moving faster than she ever had before.

“Hot damn, you are doing- unf- great!” Rainbow Dash exclaimed, his eyes going wide. “Maybe a bit too -oh goddess- much.”

The unicorn was long gone, with the only remaining thought in her head being an overwhelming urge. She was going to fuck the hell out of this feminine stallion, and ruin him so badly that his ass would gape for days. Every last bit of her strength, and will was focused on this task, pushing her body to its limits.

“Okay you can- oh fuck- slow down- holy shit- now,” Rainbow Dash shouted.

Twilight didn't hear this, as she was too far gone for mere words to stop her now. Only victory, only domination would end what had been set in motion.

Rainbow Dash gripped the bed tighter, his ass rising up with each titanic pound of the unicorn’s hips. The loud smack of the futa mare’s very large, and very full balls against his own much smaller ones sending electricity through his body. A hoof went back against the headboard, keeping them from being driven into the wall by the powerful unicorn.

Who had pushed them all the way across the bed with her relentless pounding and lightning-fast pace. A pace so fast that even Rainbow Dash couldn't help but be impressed, the stallion was nearly overwhelmed with pleasure. The speed, the strength, the way the flaming unicorn seemed to pound his prostate, it was all just too much for him.

“Oh, f-f-f-fuck!” Rainbow Dash shouted.

The pegasus shook, his wing-flapping randomly as he came hard, shooting a thick jet of seed across the bed. Though currently being wracked by one of the best orgasms he had ever experienced, Rainbow Dash’s partner didn't let up. Merely continuing to use his hole like a five-dollar flesh toy and pounding it without so much as slowing down.

Spurting more and more cum, Rainbow Dash felt like he was being milked by the powerful futa cock. His orgasm drawn out by the ruthless pounding his back door was receiving, the male came harder than he thought possible. Never given so much as a five-second breather, Twilight just kept on thrusting away, uncaring to the stallion’s refractory period.

She just kept going and going as if she didn't need rest or even to breathe for that matter. It was enough to make Rainbow Dash begin worrying if his hole was ever going to recover from the brutal fucking. Already he could feel like he was beginning to loosen up, and he knew his ass was going to gape for a while after she was done.

That was if she ever actually finished.

Thankfully Rainbow Dash could tell that the unicorn was reaching the end of her rope. Her nostrils flared, her brow furrowed, her legs tensed up, and her thrusts grew shorter than before. For once Rainbow Dash was happy that it was nearly over as he wasn't sure just how much more he could take.

Only a few short minutes since his last orgasm and already he could feel another coming on. It felt as big as the first two, which was already bigger than pretty much any he had blown. A thought which made him wonder just how big the one Twilight was about to release inside of him.

With eyes wide, Rainbow Dash realized that not only had Twilight's cock become bigger and thicker but her balls had too. Filling out with enough seed to knock up an entire town, the massive pendulous orbs sloshed loudly each time they hit his ass. An ass that was stretched around a cock thicker than his hoof, and nearly as long as one of his entire legs.

“Holy f-fuck!” Rainbow Dash muttered.

His idle measuring of Twilight's tool was interrupted by the feeling of her cock twitching inside of him. That, along with a grunt of exertion from the unicorn was the final signal of what was coming. A second later and Twilight lurched to a stop after thrusting hard enough that Rainbow Dash was pinned against the headboard.

His own head was forced to look downward, giving him front-row seats to the flood of seed getting pumped into his guts. Crushed beneath the large female, and impaled on her mammoth cock, Rainbow Dash shuddered in pleasure. It was too much for him, the pleasure overriding his senses and causing his cock to erupt with seed.

Though his eyes wanted to roll up into the back of his head, Rainbow Dash was utterly transfixed by the sight before him. His stomach, once flat, and perfectly toned was now visibly growing with every twitch of Twilight's cock. He could even hear the thick viscous jizz sloshing around inside of him while his insides were stretched to their limit.

Over and over it came until he felt like there was no room left for it to go and he may explode. Already he sported a pot belly that resembled that of a pregnant mare, obscuring his cock from sight. There didn't seem to be an end to it either, leaving Rainbow Dash to wonder if he was going to survive this encounter.

Thankfully Twilight's orgasm finally ended, with color returning to her mane and tail just as the flames flickered out. Her eyes, now no longer blood red, rolled around in the mare’s head. Her breathing which had been strong and consistent a moment earlier became ragged.

“Woah that was good,” Twilight murmured.

“You fucking filled my guts,” Rainbow Dash muttered. “I’m not sure if I’m more scared or aroused.”

“How about we just mark you down for a little of both,” Twilight replied.

“Err yeah,” Rainbow Dash whispered.

Then just as the pegasus was about to ask another question, Twilight collapsed atop of him. She then rolled off of him until she was spooning the feminine male, her cock still wedged deep inside of him. The sudden turn made Rainbow Dash moan, which grew only louder when he realized that Twilight was still hard.

“So uh. What the hell just happened?” Rainbow Dash asked.

Twilight reached around the stallion and pulled the small pony tight against her stomach, a hoof going to his bloated belly.

“What do you know about magical flares?” Twilight asked.

Rainbow Dash was silently quite glad that they were no longer looking at one another, as it meant Twilight couldn't see his blush.

“Uh not much. That's when a foal’s magic gets away from them right?” Rainbow Dash replied.

“Sorta,” Twilight answered. “You become a conduit for every last bit of magic you have inside of you. The more magically inclined you are the worse it is and the more dangerous the outcome.”

“So you flared then?” Rainbow Dash asked.

“When I was a kid, yeah,” Twilight explained. “It was… really bad. I nearly killed a dozen people and was briefly possessed by a powerful demon that I unconsciously pulled from hell.”

“Woah… that's metal,” Rainbow Dash muttered. “I’m assuming you got better.”

“Yeah, thankfully Celestia showed up and was able to banish the demon as well as save my family,” Twilight continued. “Since then I occasionally get these little… mini flares whenever I get particularly stressed out.”

“Oh shit, sorry. I was just pushing your buttons to see where I was going to start teaching you,” Rainbow Dash hastily exclaimed.

“It's not you. It's just… everything,” Twilight waved a hoof in the air. “Cadance, the first day of school, suddenly becoming Celestia’s chosen, and then that last push of frustration did it.”

“I’ll try not to push too many of your buttons next time,” Rainbow Dash replied.

Twilight was silent a moment before whispering in a low tone. “There will be a next time? Even after I did all that.”

“Pffft of course there will be. That was one of the best lays of my entire life!” Rainbow Dash declared. “Plus Celestia gave me a job though if I’m being honest I’d fuck you regardless at this point.”

“Oh thank goodness,” Twilight muttered.

“Ha! You didn't think I was going to break that easily did you?” Rainbow Dash teased.

“Well I hoped not, because when I get like this it takes a good three or four loads until it finally softens,” Twilight explained.

Rainbow Dash gasped. “What, really?”

“Uh-huh. It's kind of annoying,” Twilight remarked.

“Well shit. If you let me up I can go drain my guts and we can go again,” Rainbow Dash offered.

“Maybe in a minute here? I kind of need to catch my breath. Plus I wanted to chat with you about our plan,” Twilight countered.

“What exactly did you want to chat about?” Rainbow Dash asked.

“Well I just wanted to say that I’ll probably be tracking down a friend tomorrow, but after that, we could start whatever sort of lessons you had in mind,” Twilight answered.

Rainbow Dash hummed to himself. “I suppose that works. I was really only planning on starting on the weekend anyway. Apparently, they assign a ton of homework in the first week and I don't want to fall behind.”

Twilight laughed aloud.

“H-hey! What's so funny?” Rainbow Dash demanded.

“I just didn't take you for the studious type,” Twilight pointed out.

“It's all part of my master plan to study as little as possible and bed as many people as possible,” Rainbow Dash replied.

Twilight chuckled. “Now that, that I can believe.”