Cinch is a Cinch

by B_25

Rating: mature
Tags: Sex, Principal Cinch, Twilight Sparkle, My Little Pony: Friendship is Magic, Porn, Fetish
Length: 5277

Cinch is an inch-tall pet to Twilight Sparkle. Their 'study' sessions together are strange. They are also lewd.

Cinch is an inch-tall pet to Twilight Sparkle. Their 'study' sessions together are strange. They are also lewd.

[Cover by Philelmago]

(Characters are above 18 but below 64... check back another time about their temperature.)

Commission for Anonymous! (Man that person sure gets around.)

Want a story for yourself? Then check out my commissions page!

Published 2021-05-03 05:50:03 UTC
Last updated 2021-05-03 05:50:03 UTC

Get It?

Cinch is a Cinch
B_25 & Anonymous

The terrarium had become her world, and beyond its glass was the bedroom that spanned like a galaxy. Cinch stretched to the sky as her feet sunk into the soft sand of the terrain. She took for a jog after that, around the glass home, warming and waking up, feeling herself come to life.

The terrarium had been set on a small, circle table in the corner of the bedroom, seeing out to the universe of the scene. The massive bed that spanned the seat at one corner, a desk that went on like a desert on the other side.

And here Cinch was. In this little glass vase, which had been set up like the sands of a beach—with an itty-bitty cottage to serve as her actual home. There was a little park bench out on the sands, where she came to sit and rest after her run. She'd left her morning wrap here, eating into it, as the run always made her hungrier for it.

All of this was to kill time until her master came home.

How low I've fallen... from the principal of a prestigious prep school... to a tiny bug, living in a glass vase... in the bedroom of my former student.

It killed her to think of how much she had been reduced. To have been so smart, so socially powerful... to this. That she was nothing. Nothing more than a speck that lived in a miniature world inside a college student's bedroom.

Once Cinch had finished her breakfast, she went to one side of the beach, where a bottle cap had been left. It was like a crater in the sand as it sunk into it. Round and filled like an inflatable pool. She kneeled before it, catching her reflection over the rim, seeing the woman wearing a bun on the water's surface.

Her hands dipped beneath the surface, the temperature cooling her skin as she cupped them. She brought the water to her mouth, drinking, not even given a cup to use. It was different at the very least. Something that degraded her even further.

And then there was thunder in the distance. Sand rattled beneath Cinch's feet as quakes tore through the wooden walls beyond her glass home. Cinch froze as it came closer, heavier and faster, unlike her usual master. Her heart stopped as it spun its collection of fears.

Has that pink one found out that I'm tiny? That blue one, here, to exact some revenge before Twilight can find her? Is it her dog trying to take a second swipe at me? One of my former teachers, here, to see me in all my shame?

The towering door on the horizon had squeaked. Its door knob turned slowly, and Cinch was hopeless to stare at it. It opened to reveal the purple form of the giantess. Cinch sighed and collapsed, wiping a brow as her student had returned.

Twilight strolled through the door and closed it behind her. She didn't bother even looking at the case, but rather, seeking her dresser across from it first. Cinch growled and clenched her fists. She barked, yelling, walking to the glass, banging on it.

But none of them reached the giantess on the horizon.

No matter how angry she became, the greatest shout, the hardest smack of skin on glass—that giantess, so far and so close, would not hear her. Twilight's back was to her as the student pulled back the drawer, herself, bending forward, and removed all sounds from the tiny.

Twilight had been wearing a skirt and, when she bent forward, the thin material rose over her thighs. Raising like a curtain to reveal the squishy, purple flesh, as it only thickened as it ascended. All of this came to show the tight white underwear that squeezed the bottom of her cheeks.

Cinch was lost for breath as she took a step back. Feeling warm at seeing the growing curves of the woman. Twilight had become... enhanced, in certain areas, after her transformation with magic.

She had yet to buy new clothes that suited her new form, which left her current pair of panties to struggle, desperately, to cover the thickness of her curve. Even her vulva bulged with the arc of a great bridge beneath the fabric of the underwear.

And she could even see, as the giantess spread her legs, between them, beyond them, the massive mammaries that hung in the distance. They seemed to defy gravity as they hung, smushed together, so impossibly full and buoyant.

Finally, Cinch fell onto her own ass, looking out at the great giantess, with a hand lowering between her own legs. To know that such a bombshell had her for a pet. That she was set to serve that massive thing. To become a servant to a goddess.

Well, she hadn't fallen that low... yet.

Cinch was forced to go back to the past in memory of how all of this began. It had been the friendship games and, when she went to investigate all that had been happening, running out to the track in the battle of magical powers—a bolt of purple lightning had struck her.

Darkness encroached her vision for some time. Her first sensation had been a smooth, although slightly wet sensation at her back. She rolled to the feeling of being hugged by silk. Her nose twitched to the scent. Musk. The kind that stank a bedroom, somehow, like a cloud despite being outside.

Once her eyes had finally opened, she could see the sun, up close, except for the fact that it was purple. After a few blinks to clear her vision, she saw the face of Twilight Sparkle, hovering over her, wearing an expression of horror.

Cinch looked around her surroundings to see the plane that was her panties spanning a space of a park. Shaking her head, she looked back at the giantess, who quickly claimed her—and hid the clothes.

Twilight had taken her into her care, for the time being, after talking to Sunset on the way to reverse the magic that had transformed her. While she worked away at it, the two would be forced to live together.

For the time being, at least.

Cinch shook her head to return to the present. The giantess, far away, was sliding up her jeans. She had completely blanked out on the student during her changing. That was another weird thing. Twilight didn't go to a different room to change. She did it here, before Cinch, as though she were no longer another person anymore.

And parts of that statement were valid.

Twilight then turned around and flipped her hair over her shoulder. Her face in the heavens gazed down at the glass home. With a smile, she slid a headset over her ears and pulled the mic before her lips.

She then tapped the side of the set, powering it on.

Cinch rolled her eyes and sighed. Going back into the house and coming out wearing the same. The headset powered on and, within a few seconds, the two were connected. They needed such a device to speak to each other. At least—from a considerable distance.

"Are you online?" Twilight asked with a hand on her hip.

"Yes, yes." Cinch turned her head and cleared her throat, crossing her arms and taking a stance. It was a pitiful way of trying to assert power or dominance or anything over the titan. "You're late. We still have some testing to do."

Twilight rolled her eyes and twirled a finger in her hair. "Sorry! Spike had an upset stomach, and I had to leave him with Fluttershy for the time being." She twirled a swirl of hair before slipping a finger out. "Didn't seem right to just drop him off! Had to have tea and a bit of a talk before that."

Cinch sighed. "Yes. Whatever you say, Twilight." She groaned in annoyance, as though she were still a person, as though anything she did mattered the one who controlled her life. "We still need to get a phone or something of the sort developed for me. At least for us to keep up to date."

Twilight chuckled with raised eyebrows. "Whatever you say, ma'am."

The testing had gone as expected, with Cinch riding in the pocket at the front of Twilight's top. It always caused her to blush at the tightness of the pouch. The book behind it stretched out the material, causing the little one to be hugged between cloth and boob. She could feel the tit at the base of the pit.

If she crawled down, she would be able to find it.

But this was the usual place where Cinch would hang out during their testing. Twilight's head would hover above, as would the rest of her frame, as it spread out in all its immensity. On the table was a board clattered with computer chips. Twilight was poking the numerous sockets with a metal rod.

While Sunset worked on a magical way to reverse the spell, the duo, instead, worked on a scientific method of revolving it. But there was something different about this session—and Cinch knew it. From Twilight's last tease to her insistence that she ride at the front of her shirt, which pressed the little one into her boob... both of them were both warmer than usual today.

Cinch looked up at the giantess's face as all of it refused to be narrowed into such a pitiful view. That purple face, a touch darker at her cheeks. The little beads of sweat that weren't all that little that rolled down her face.

Cinch knew for a while that the student had a crush on her.

Twilight had it out for the older woman despite being a hot young thing herself. To be such a bombshell for someone so much older and smaller. There were various reasons why all of that teased the giantess.

Just as it teased the little one as well.

Cinch couldn't help but let her hands slip from the rim of the pocket, feeling herself slide into the pocket, smoothly massaging around her. It darkened as she slid into the depths of the air pocket—until the tightness halted her progression.

"C-Cinch?"

Cinch ignored the question and instead twisted herself in place, crawling downward on the curve of the boob. The pressure allowed her to do so as the orb thickened at its base. Cinch had to wiggle through, feeling the light bumps through the cloth.

"Just where do you think you're—oh."

Cinch didn't mean to bump into the massive tit, crawling into it, light, as the thicker flesh caused her to stop. Its swell poked through the fabric, pitching a tent, all within the darkness of this fabric cave. Moans rained from the beyond. Echoed as everything in here seemed louder and hotter.

Her hands reached for the tit, its very tip, barely able to stretch around it. She needed both hands to squeeze at its top. The shuffling of fabric was enhanced here as moans grew louder outside of the pit.

Cinch crawled onto the protrusion, enough for it to hug against her front, as she tried to cling to it as much as possible. Her hands searched across its length and shape. She was well aware of how the world rocked back and forth, with all the wobbling and bobbling attaches to the giantess.

As well as the screeching of a chair against the floor that was an abyss below.

Cinch yelped at the sudden jumping of the boob, rising as it smacked her upward, falling as the massive chest fell back to place. Twilight had taken off her bra before this, which meant her oversized twins were free to bounce and swing as they pleased.

So Cinch was sandwiched in the pocket, unable to do anything as the heavy mass beat into her, enveloping her in softness, heat, and a scent that could not be forgotten. The boob rocked from side to side as thunderous steps quaked from below.

Cinch didn't know when the fingers had slid into the cavern after her, the feeling of two soft hills squeezing at her hips. She was pulled from the pocket and brought into the sky itself. Far away in a massive blur, loomed the face of the student, with a lip bitten by teeth.

Air capitulated her forward as lips claimed her frame, two plush, fleshy things that suckled on the tiny. Cinch wiggled against the pressure and pleasure, the suction of the kiss, keeping her affixed to Twilight's mouth.

Below teased those long, purple arms, undoing the buttons to her top. Cinch could hardly look as the lips parted a little—the broad tip of a tongue, smacking into her, licking all over her. Soon those hands below were pushing down Twilight's pants.

And her underwear after that.

Twilight then slid her arms out of her shirt as the clothing that could clothe the world fell to the ground. After a final kiss, the lips fell back, retreating as they formed into a cocky smile. Cinch, however, no longer had suction upon her.

Her feet sunk into the bottom lip as her hands tried to squeeze the top. Holding onto them, with a burning in her stomach, as she attempted to save herself from falling. But then the lips pushed outward in a sudden thrust—softly punching the little one off.

Cinch fell as winds sliced upward and her stomach rolled. She twirled in the air, fearing death, glaring downward at what would bring it. However, what swam into view was the massive bust of the student—an enormous arm snaked around it to pronounce the softness of the twins.

She crashed into a sea of purple that sank with the weight of her force and momentum, sinking and sinking as it only had more softness to give. Then it plopped back out, shooting the little one up into the air. Cinch crashed again, softer this time, and did so again until Twilight's boobs had broken her fall.

"It's a good thing those two grew bigger during that power spell, huh?" Twilight teased from above and, as Cinch sat back, looking up, she looked into the underside of the chin. "I wonder how much higher I could drop you? Maybe above my head? What if I held you to the ceiling?"

Cinch swallowed and wanted to speak but could say nothing, as nothing could really hold sway over the titan. Her hands squeezed at the purple flesh. The density was pleasing, as she couldn't help but knead.

"You're always talking about needing to test and test!" Twilight went on as her finger slowly slid across her bottom lip. "But we're always testing magic and ways to bring you back!" Twilight looked ahead and strolled forward, each massive step bouncing her chest. "But we never test some more... personal things."

It was scary being on the massive chest as it jiggled, each step, a jump and a bounce, that slid the little one across the terrain. The head in the sky was set on only looking ahead, not caring what happened to the tiny set upon her.

Cinch crawled across the landscape, coming to lay low, clinging to the boob as though her life depended on it. Soon the giantess had reached the bed, coming to set back against her pillows, allowing her legs to spread across the sheets.

"Like can a tiny still pleasure a giantess? Will it be better or worse? How different of a feeling and a sensation is it?" Twilight looked down from her perch, sending a finger onto her chest, to push on the bottom of a tiny. "You were enjoying yourself with my nipple earlier... but what I want to know... is can you finish the job?"

Cinch had no choice on the matter as the finger pushed on her ass and towering tit. Soon it nudged between her legs as the little one was first to stand. She stumbled toward the nipple, falling onto it, feeling its heat, the coarseness of the skin, coming to press against her.

At first, she hugged it. Feeling a hand across its length, its shape, coming to embrace it with all her might. There was a moan in the distance as the student watched on. A tiny human trying to pleasure a lighthouse of flesh.

The first course of action was to try and crawl up it as much as she could, clamping her legs around it. Rising and leaving the ground of the boob below. Forever on the horizon, Twilight's face watched on, panting, with another hand reaching for her other twin.

Cinch reached the top of the tit, forced to squeeze it, now and again, with her legs and arms. And she couldn't even clasp it. There was simply too much there for her pressure to get through.

At reaching the top, she bent her mouth over the tip, taking it into her mouth, closing her eyes and starting to suck. Rubbing her legs and arms over the sensitive protrusion, all to the quakes and moans off in the distance.

That brought some power back to her. Knowing that, despite how little she was, and how tiny her actions on the small were, that they still could elicit such a response. To see those legs shooting out onto the desert of the bed, wrinkling an ocean of sheets, sliding back in a rhythm.

There were also the quakes through the giantess herself. How she would rise and drop and cause explosions throughout the rest of the bed from her mass alone. How she was thumping on her ass, riding out the tiny ministrations, something so little, able to please so much of her.

But soon, that wouldn't be enough as, in the seconds that came next, a hand passed over her. All went dark as Cinch's lips left the tit. She glanced up to see the cup of a hand crashing upon her: smushing her into the boob.

"Mhmmmhm! Got yoooou!" Twilight cooed from afar as the force of her hand had knocked the little one from the tit. Cinch laid on her front, on the wobbly surface, as a dome of fingers closed over her. "Gotta saaaaay! Your tiny lips feel really good."

The giantess chuckled. "There's a psychological kink to seeing someone so little work on something so big! The whole time I just wanted to grab you, squeeze you, and just... do everything with you!"

Then the hand smacked down with an audible sound echoing throughout. The pudding of skin had wobbled beneath the palm, the squish, growing against Cinch, as heat and darkness intertwined in the recess.

"You can't do anything underneath there, can you?" Twilight's voice was muffled through the hand, which moved, pushing on the clump of flesh. "C'mon! Let me feel you fight against my big meanie of a hand!" There was laughter that rose and dropped the sea of Twilight's chest. "Or else it's going to drown you in boobies!"

Cinch was sandwiched between skin and flesh, the hand on her back, the soft, smooth boob beneath her. Her hands pushed into the substance, sinking into it, finding purchase after a few moments. However, when she tried to rise against the sky of a palm, it dropped on her, heavily, snuffing all will—without a fight.

"Awww! Was that you trying to get up! That didn't even feel like an itch to me." Twilight's hand produced a monstrous sound when it moved. A sound that, at normal size, probably couldn't be heard. The palm pressed deeper into the boob, squishing and compressing it, leaving the little one utterly trapped. "Too bad I don't have a tighter bra I could wear. To have you this pinned all the time—well, I wouldn't have to worry about keeping you in some glass home."

Cinch burnt at that statement.

"My body could become your home at that point." Twilight's hand massaged her chest, back and forth, around and around, teasing out all the tickles she felt—using the tiny one's body. "Stored in my chest as my girls jump and rock at every step. Or pinned to my ass as I walk with a bit of a sway. Could even recline at the front of my panties if someone has been a good little principal."

The hand released at that point as the dome of purple lifted to the stars. Cinch thought the onslaught of fresh air would be a good thing, however, when it whipped toward her in a current of wind—she felt differently. Her body started to roll forward as, behind her, the titan began to sit up.

The colossus had risen as her chest started to hang from the pull of gravity. Covered in another girl's sweat, Cinch rolled over the hill of the boob, coming off and bouncing back onto the surface—until landing on the sweeping belly beneath. Sliding across the toned purple as its sides curved into tautness at the sides.

All while the goddess watched from above.

Until the lavender pushed toward, causing its surface to become flat, slowing Cinch's descent. She came before the valley of titanic thighs, an impossible mass and girth, flanking each other as they blew toward the bed's horizon.

"So depending on where you want to stay on my body once we're done this little... research session," Twilight began as her legs spread, revealing the treasure cove that was buried between them. "Then you should get started on treating me nicely. Or not. Maybe you like being punished by a student half your age."

Cinch didn't bother replying because she couldn't. Not when she was hot and bothered and knocked into a state of pleasant submissiveness. Rising onto her hands and knees, she crawled over the curve of the crotch, descending it, to the rolling mounds that presented themselves below.

That was until a ship of two fingers flew overhead and into the depths of the chasm, their tips setting on either lip. With an immense pressure that wasn't even an iota of force to the giantess, the mounds were pulled apart: revealing the folds beneath.

And the small hill at the top slowly uncovered itself, revealing the clit of the lover. Cinch wasted no time in crawling over the hood, passing over the rim and onto the solid nub itself. She was forced to cling to it, really, spreading herself wide and hugging the woman's clit as much as she could.

She did all that she could to it. Her hands rubbed and explored the orb to feel the shudders on the flanking thighs. Tons of purple with a curve that went out of view. She could barely see over the edge of the crotch, over the plane of the belly, to the monstrous breasts that rested far above.

Seeing how they would rise and drop, shake and quake, at her tiniest ministrations.

Over her back, however, she felt the shadows of the pillars floating behind her. Cinch didn't have time to glance over her shoulder before the fingertip jabbed into her back. Exerting immense force as Cinch didn't even need to hold onto the clit anymore.

"Aren't you just a good little principal! Allowing yourself to become a speck of a toy, used by my little finger, all to rub my clit into oblivion!" It was true. Cinch's arms and legs hung limply as the finger took complete control of her body. "Knowing I have absolute power over you. That you're nothing compared to the smallest part of me... hehehe! You should be honoured that, itself, is enough to turn on a big girl like me so much."

Cinch struggled against being pleasured against to a clit came to a slow, though, as the fingertip behind her did the same. It has pushed so much on her, though, that when it pulled away—she was stuck to the fleshy hill.

It pulled back to reveal the pussy of the student, so vast and towering, like a monstrous cavern that was hungry and suckled on the air—wanting only to devour. Cinch thought she was saved in being taken away from that thing,

Until the finger travelled over the plane of a taut belly and over the mountains of violet, slowing before the face of the titan, one that was panting, blushing, and looking hungry. Twilight's lips smacked as her mouth opened, a vine of spittle hanging inside the ceiling of her maw.

Cinch screamed as she flew into the cavern of the horny giantess, whose eyes and mouth closed as the finger was inside, coming to moan onto her finger. She suckled on it for all the pleasure that it brought her.

But as the finger plopped out between the lips, its tip was wet, and barren of any tinies.

Meanwhile.

Cinch had been closed in by the walls inside the mouth, taken by a tongue that dolled over her and, eventually, left stranded on the fleshy beast. Feeling it roll like the waves of the ocean. Noticing all the buds that flanked the surface.

The beast then rose like a tidal wave, coming close to the ceiling of the mouth, forcing the little one to slide down it. Cinch smacked onto the smooth grounding, feeling her back pressed to the back of teeth force—as he looked up at the pink leviathan.

It crashed down like a tidal wave and smacked into Cinch like one. It washed over her, smothering the tiny in undulating flesh, which wiggled into her form. Cinch's arms beat on the beast only to sink into its coarse texture. Its wetness and heave slathered Cinch.

Licking up and down Cinch's chest, the tongue buried itself lower, where the tiny's legs had been closed. With subtle force, it snaked between her thighs, finding the treasure buried between them. Cinch moaned, ceasing to fight, starting to submit.

The individual buds of the tongue rolled over her slit, spreading her folds as boldness slid between them. The whole layering of flesh laid onto the curve of Cinch's crotch, pressing down, its softness sinking into her sensitivity.

It rubbed, back and forth, with immense pressure on the mote that was her clit.

Cinch rolled the back of her head off from the wall of the booth behind her. Looking down at the tongue buried between her legs as though it were a big dog in a place where it did not belong. She closed her legs on it, rocking her hips upon it, riding out the building high within her loins.

Moans bounced around the cavern of the maw. Knowing that this place was actually a living thing. Around Cinch was a mouth as big as a cave. That the mass of a head surrounded it. It hurt Cinch so pleasantly to think that, if this mouth was already a world to her—the rest of the scale to this woman.

Cinch ended up clinging tightly to the tongue as she rubbed and humped and thrust upon it. The high building and building before it released with a warm stream between her legs. She then went limp against it.

Surrendered.

There was a satisfying humming around her after that as gravity began to tilt forward. Cinch rolled back onto the teeth until their surface became flat, and she rolled over their ledge. Falling and landing on the back of the lips, she was limp on the plumpness, unable to do anything anymore.

Light sliced between the lips as a gap opened between them. Cinch fell between the bridges, further between them, until they spread out from underneath her. Her body crashed onto a smooth, glossy surface. One that was round at the top but straight and long going down.

Cinch laid on her front over it, seeding over the edge of the hill, seeing how it sprawled down to the bed. The object put towers to shame as it was its own skyscraper. Above, the light was snuffed by a moving mass, and a shadow was cast over.

Purple thighs bigger than pipelines swung over the object's sides, with a bottom that clotted the sky. Cinch barely twisted her head, looking up at the bare bottom of the giantess. The cheeks, so high in the sky, and the mounds poised above her.

She then looked forward, seeing the underside of the purple expanse, the feminine body of a woman. It spanned miles to the horizon, where boobs hung like clouds, stacked together, with an upside-down face poised beneath their bottoms.

Twilight looked at the little teacher set on the top of her dildo. She giggled, adjusting herself, the explosion of springs and the ruffling of sheets echoing throughout. All that was caused by the slight adjusting of the goddess.

The shadow over the dildo deepened as, above, was the curve of Twilight's pussy lips. Without warning, the flanking legs dropped to the bed, that crotch, thrusting downward, swallowing and snuffing the shaft into the confines of her cunt.

Cinch watched the world around her shrink into a tunnel of pink. Seeing the squishy, surrounding circular walls, she clutched harder to the dildo. There was the hammering of a heartbeat in the distance. A pulsation to the undulation to the living walls of the pussy. She flew in deep, seeing, at the end, a round, thick cervix.

The heat was sweltering here; the musk burned in her nose with all its delicious filth. Hearing and feeling the thunder of those distant legs, rising and dropping on the bed, how the crotch that consumed her, did the same onto the mattress, like a feminine nuke denoted in every passing second.

Twilight was fucking her like an animal, a thousand feet against an inch of a woman, the surrounding walls oozing with cream, as the dildo shot in deeper and deeper. The cervix at the end peeked open with filling. Enough that, on the final shove inside, the dildo smacked into it.

Twilight must have whipped her head up in the great beyond outside the plane of her pussy for, as the contact was made, Cinch flew into the opening. Sucked and suckled into the tight passage and lubricated by the overflowing production.

Cinch slid through the passage and flew out through the opening. Seeing an open biome of pink that sunk inward. She flew over the cheery sauna, smacking into the thick, flexible flesh on the other side. Hitting it and rolling down it.

She sunk into the pool of milk at the center of the comb, resting there, catching her breath on the perfume of Twilight. Around her, the zone pulsated, quickly but slowing, as the surrounding giantess was easing from her high.

"You're... hehehe.... inside me... aren't you?"

Cinch could hear the dildo being pulled out and tossed onto the bed. The sounds came faintly through the veil of the belly. Next came a pat. The knowledge that she was an itty-bitty woman at the tightest section of her belly.

"I guess you can stay there for now... let my big body... carry you for now... until we find another place to keep you." Twilight went to stand and put on her clothes, the sliding of clothes onto the titan, scary—but the tiny would be safe deep inside the woman. "I get to do all the work while you can rest easy. Must be nice being carried inside such a hot thing's body."

Twilight flicked her hips, which jostled the chamber before it all settled.