Curious Copulation

by LilSlipsy

Rating: mature
Tags: Princess Celestia, Slice of Life, Sex, My Little Pony: Friendship is Magic, Other, Porn, Random
Length: 2221

A growing filly princess has needs, and after resorting to some alternate means and some dubious persuasion, Celestia might finally have a way to fill those needs.

With nopony willing to help her explore her own body, the filly princess resorts to summoning somepony else to help her do just that. While Celestia’s summon looks like a stallion, there was something certainly off about these humans… but at least the important part was there for her… just some persuasion might be in order.

A story I was inspired to write from this image by Ccruelangel (2575000 – NSFW)

Tags: Foalcon, Filly on Stallion, F/M, First Time, Human Transformed

Published 2021-03-22 03:30:00 UTC
Last updated 2021-03-22 03:30:00 UTC

Mmhmm

“Is… is this ok?”

It was as long as nopony opened the door. Princess Celestia didn’t answer out loud, but her pink tail waving from side to side was enough to make him almost forget what he asked. Even after calming down somewhat from the surprise of being summoned to this room, he still had questions, asking why he was a horse, where was he, how could he get back, and many more that they seemed to all blur together.

“I’m not sure what you humans are like where you come from, but when a mare is asking you for help, you’re supposed to do it,” she said, staring back at the soft grey stallion behind her, making sure he had more than an eyeful. “Now… do you want to help me?”

“Y-yes… but you’re like less than half the size of me… and is that a picture of your parents?”

“Let’s not worry about that,” she said as the photo slowly tilted over, her magical glow placing it face down on the shelf, hiding her two parents and sister from view. “How about you focus on me instead? Look at my eyes… or lower...”

It had been years since she first learned about it, but no matter how many times she asked, ordered, or begged, ponies never helped her indulge in the curious union between two ponies. Her hoof was a start, but it was not even close to what she wanted; what she needed; what she was craving every night she went to bed, imaging the guards outside venturing in and… well… she didn’t have to imagine any more.

“I can see that it likes me… that you like me.” She giggled softly as her own eyes wandered down between the stallion’s legs, watching its half-erect mass slip fully out from its sheath and visibly throbbing as it tried to defy gravity and rise. It was almost there, she just needed to provide a little more incentive. She placed her forehooves up on the couch in front of her, flicking her tail fully over to the side as she arched her back and stuck her rump out as much as she physically could. “It wants to come over here and touch these flanks. These princess flanks. I am a princess you know, did I tell you that?”

“More than a few times.”

Her heart skipped a beat as he finally moved. He still looked like he was walking on ice and struggling to stand, even on his sturdy looking hooves, but he was close enough that she could feel the edges of his breath tickling against her flank.

“A-are you sure we can do-“

“Just put it in!” she yelled, squeezing her eyes tight burying her head into the cushion when she realized just how loud she was. “P-please,” she practically whispered out this time.

“R-right! Ok! I’ll... I’ll just…”

She gasped as soon as she felt him shadow over her and press his chest against her back.

It was happening.

Her eyes were wide as his hooves slid onto the couch and she felt something poke against her rump. At least it wasn’t casually drooping out from him anymore, but now it felt fully at attention and ready to ram down her doors. A gulp went down her throat as she felt it poking again and eventually finding her nethers, pressing against her fillyhood; it almost felt like her entire hoof.

As he moved his hips, trying to find the angle that would allow him entrance, his chest was sinking down, pressing her more into the couch until it was getting hard for her to breathe. Taking shallow gasps as she squeezed her eyes closed, she waited for the magic to happen, but could only hear the wet squishing of his tip against her soaked folds as he hit either too low, too high, or off to the side and right into her butt cheek.

“I’m… I’m sorry, you’re… you’re just so small.”

Celestia finally gasped as he lifted off just enough for a breath of fresh air.

"Whoops! And this horse body is still kind of weird to move!”

“T-that... that’s alright! Here… let me try,” she said as her horn lit up.

“W-whoa!”

His tip had a yellow glow around it that gently tugged him forward, pushing it back up against her sex and started to spread her folds as she searched for the perfect spot. “Mmm… s-see.” She wiggled it to her entrance and lined the thick tip up as best as she could. “R-right here.”

If the tip was going to fit, this was the best chance it had.

She felt him start to press into her once more, and luckily it found some purchase, not enough to slide inside yet, but her petals opened up to let them know they were both on the right track. His hips jerked again and again, forcing her off balance and stepping forward until her belly was tight against the couch with nowhere else to go.

Her hips wiggled from side to side, feeling it just on the edge of popping in as her tunnel stretched wider, and their attempts became bolder. He grunted and held onto her chest, using the weight of his hips and a sudden thrust to try and get inside. She just clenched her teeth and practically hissed as she tugged with her magic. “Ahh… j-just a… little… bit… m-more!”

“F-fuck…”

“A-ah~! Buck!”

With a team effort, her entrance finally gave way and the tip sunk in deep all at once. A small whimper escaped Celestia’s lips as it opened her up for the first time and spread her tunnel wide around the adult sized appendage. She pressed herself harder into the couch and held her clenched teeth, grunting and sniffing as he kept sliding in deeper.

The stallion let out a delightful breath of relief as the hard part was over. It still took some angling and enough pressure to sink in even more, but nothing like what it had taken a moment ago. But as she whimpered again he suddenly froze. “Oh no! I’m sorry! I didn’t mean to-“ He paused as he looked her over again for a few moments before hesitantly asking, “wait… are you a virgin?” His eyes widened and his hips pulled back, but it was like a wall stopped him as a magical glow formed around his rump and held him.

The tears welled in her eyes as she sniffed. “Y-you’re not pulling out.”

The stallion practically froze and didn’t say another word as Celestia let shaky breaths out.

“J-just… give me a minute…”

She didn’t push with her hips, but instead pressed against his rump with her magic when she was finally ready. More of him continued to go inside, slowly spreading even more of her virgin tunnel apart as it explored her deepest parts. “O-ohhh…” she let out in a soft gasp as his tip hit against some barrier deep inside.

Instead of pausing, she still tried to give a few extra pushes, trying to see if it was supposed to go even deeper. But she already felt so full, and it almost felt like it was already in as far as it could go. Slowly her magic on him started to fade as she bucked her hips, sliding him inside her as little as she could pinned down on the couch like this.

“Mmm… mmm...” she softly let out every time she moved. She looked back, only noticing that as deep he was, there was still half his length still outside. Her head leaned against his hoof and only pressed into it tighter as she watched his hips start to move. She could see his length retreating and felt it pulling from her stretched hole, giving her fillyhood some respite until he pushed forward once more.

Celestia’s eyes squeezed shut as she buried her face into the fur on his hoof. His movements were slow, and besides a few uncoordinated slips, seemed as careful as they could have been. But soon, wet squishing noises were coming from her as he cautiously picked up speed. His long length reached all the way down into her depths, kissing the entrance to her womb almost every time; sometimes gently, but other times she couldn’t help but squeak when it was a little too rough.

Her breaths were getting heavier and her hoof grabbing on his was getting tighter. Juices were flowing out freely from her, and she could feel her own warmth trailing down her thighs and dripping down below. “Mmm… nnngh~,” she let out in soft moans that were mixed by a few muffled grunts.

“Does it feel good now?” he asked as his free hoof rubbed along her chest.

“It still hurts…” she said as her grip tightened for a moment. “But y-yea, I can… just keep going…”

He paused for just a moment as if contemplating those words, but efforts were renewed with more vigour soon enough. More of his length was slipping in the longer this went on, not nearly enough to fit himself entirely inside, but enough that the top of his hips could clap against her cheeks if he angled just right.

She had been pinned against the couch, but with every thrust, she was sliding more and more up it until her hindlegs couldn’t touch the ground anymore and were dangling off. Her moans were getting louder too, trying to muffle them with his leg as best as she could as everything was building up.

That familiar tingle inside of her when she was alone with her hoof was rising, but it felt deeper this time... stronger. And it was coming up fast. She squeezed her thighs tight as her tunnel clamped down around him. It was enough that he let out a surprised, “O-oooh~” when it almost stopped him in his tracks.

But he kept going, thrusting through her vice-like grip and sending her further off the edge than ever before. “A-ahh~” she squeaked out as she felt everything give and a sudden wetness come gushing out and audibly squirting onto the floor. That was new, but so very welcome as her head stayed high in the clouds for the precious moments that it could.

However, she didn’t stay there long as his rutting continued, sending her back to reality as his thrusts were getting jerkier. She almost opened her mouth to speak, to let him know that she was done and that he could get off as her sensitivity started to rise. “F-finish,” was all she could say, doing the complete opposite of what she wanted and instead only had his hips slapping against her rump harder.

He stayed in deep, firmly thrusting against her until he finally buried himself in as far as he could go, grunting out loud and lifting her rump off of the cushion. She was about to say something again, but the sudden heat that blasted into her left her speechless. Hard throbs of his member shot out more and more warmth into her core and filled her with absolute bliss. It was almost enough to make her reach that orgasmic peak once again, coming so very close to that point but calming down as she felt every one of his muscles relax.

The two laid on top of each other, breathing hard as everything came back down. With a wet pop he pulled himself from her as he stood up, letting a torrent of white come flowing out onto the cushion below.

He whipped his head with a hoof, staring at his work as Celestia watched him. “Is… is this really legal?” he asked again.

With a shaky nod she let out a soft, “mmhmm…” (2575000 – NSFW)

There was a thin line of liquid connecting their sexes together that snapped away when he pulled too far. Her rear felt like a painted mess, but the soft afterglow and warmth in her belly more than made up for it. “M-maybe you could stay the night… and umm… sleep with me?” she asked in an almost whisper as she looked up to him with a crimson blush around her cheeks.

He gulped again, “I… I could do that… but will you be sending me back?”

“I… can see if I can do that in the morning,” she said as she sat up, squishing into the mess below her as she turned back around to face him.

“Do you not know how to?” he said as his eyes widened.

“I think it might be in the book… but we can see in the morning. Just…don’t go outside or the guards might see you.”

His face fell and eyes narrowed. “That wasn’t legal, was it?”

It was hard to hold back any longer, but a small smirk lit along her face as she shrugged.

“As long as nopony opens the door.”

Author's Note

A quick story that I wanted to write as soon as I saw the image that Ccruelangel made (2575000 – NSFW). Hopefully you enjoyed the fun that these two had for Celestia’s first time and the stallion’s first time in a stallion body. If you like this, please leave a comment or like to let me know!