Ding ding! Ding ding! Finally! Thought Button Mash upon hearing the school's bell sound, dismissing him and his classmates to their freedom. School was little more than a chore for the young colt. While many others his age appreciated the opportunity to socialize and play games with their friends- for Button, any time away from home was time not being spent conquering his newest games and getting the highest scores yet! He often found himself daydreaming about his adventures, strategizing how to overcome the trickiest parts- even during class time much to the disapproval of his teacher, Miss Cheerilee.

As usual, Button's mind began to wander as he slowly walked home. What was not usual were the changes he was beginning to experience, too lost in thought to notice. Deep between his haunches, the brown colt's anus began to slowly swell. Thicker and wider it grew, a little plump ring of muscular flesh seated between his cheeks. His gait slightly altered to compensate, his plot swaying from side to side rather seductively. Heads began to turn as he walked by, first due to his sexy stride- then to his anus, now as large as a donut, shining in the sunlight as though it were freshly glazed. A passing breeze made Button shiver, his rear flexing, his thick ponut contracting and releasing. It was quite the sight to behold.

"Hey Button!" The young colt perked his head up, hearing the familiar voice of a friend approaching him. "What's that behind you?" He asked, prompting button to turn around on the spot, seeing nothing out of the ordinary.

"Uhh- nothing?" Button asked, a confused tone to his voice.

"No! I mean ... what's that on your butt?!" His friend exclaimed, shocked to see such an odd protrusion from Button's plot.

Button turned his head over his shoulder, looking to see what his friend was referring to. He was certainly not expecting to see his own sphincter as wide around as his own hoof sitting between his cheeks, exposed to the world. Curious, his friend poked at it, prompting Button to blush and moan. "Nnnghhyaahh ~ !" He couldn't believe how sensitive it was, the simple touch of a hoof sending waves of pleasure through his body.

Another poke- this time right in the center of his ponut, his eyes widening as he felt the hoof of his friend begin to sink inside of it, prompting him to clench again, pulling his friend's hoof a little deeper. "Coooool!" His friend said with a grin, feeling the warmth of button's hole squeezing his forearm. Button couldn't help but moan louder, each time he contracted it stimulated him all the more, feeding back into his own pleasure.

"Nngh- ... That's my butt!" Button said, a little too loudly, having finally collected himself enough to speak up. His voice turning the heads of ponies all around in his direction, making him blush even harder. There he was in the middle of town, a friend's hoof inside of him up to his shoulder, his anus like a huge puffy balloon resting between and behind his plot.

His friend rapidly retracted his hoof causing Button to shudder and moan even more. "Iiii should go ... Later Button!" His friend called out, quickly fleeing the scene, leaving the poor overly sensitive colt to the embarrassment of knowing everypony around was watching his every move.

He continued home, no longer daydreaming- instead hyper-aware of every sensation he was experiencing. His massive ponut making his gait even more awkward as he tried to avoid squeezing his hole by the motion of his hind hooves. Despite his best effort, every step brought more pleasure. Button felt each gust of wind that blew by, shivering in delight as it tickled him and made him feel all weird in a way he wasn't really familiar with.

More stares from the ponies he passed, prompting him to pick up the pace even more, now hoofing it towards home, moaning and grunting each time his hoof hit the ground, his plump ponut perpetually jiggling behind him, bouncing along on pace with him. Finally, he arrived at his house, opening the door. Good- his Mom was nowhere in sight.

"Hey Mom I'm home goin' upstairs to play ..." Button announced, his words slurred together wasting no time in climbing the staircase leading to his bedroom. His hole now having spread his cheeks right apart- as wide as his entire plot used to be. Big enough around to take a pony's head inside. He stopped in front of his closet door mirror, turning around and looking over his shoulder once more. His heart began to race as he saw himself in the mirror, his massive anus swelled up like an overinflated tire. He cautiously stretched a hoof back between his legs to feel it- a sudden surge in pleasure confirming it. Yep ... definitely real. He sighed in bliss. How would it feel to sit on it ... ? He thought to himself, blushing at the thought.

Slowly the young colt lowered his haunches towards the ground stopping with his hole just above the wooden floor. Here goes ... He dropped his weight onto it, his whole body quivering overwhelmed by the sensations- the sheer pleasure. He didn't know what to compare it to, he felt really good, happy, tingling all around him, almost like he needed to pee- he didn't though, he had no frame of reference to know what an orgasm felt like.

But what was familiar was what was happening to his colthood. It had only happened a few times prior, but once again, Button felt a tingling in his groin as it began to engorge, becoming erect and signaling his arousal. He enjoyed rubbing it when it was like this- he wasn't entirely sure why, but it felt great.

The increased pressure to his ponut triggered another wave of growth, faster than before as it swelled and lifted him higher off his bedroom floor. Wider and wider it spread, filling up the room until he found himself laying on top of it, like a beanbag chair. We wiggled into place, getting comfortable, each little moment sending yet more pleasurable feelings to him. He panted and moaned as he lay there stroking his colthood over and over, his heart racing faster and faster until in one tremendous burst of ecstasy, the young colt came, releasing his load down over his hole, giving that ponut a layer of his personal glaze.

His hooves went limp as he recovered, just sinking into his 'beanbag chair.' "Best ... seat ... ever." He said quietly, stretching his hoof out to pick up his controller and continue playing, his after school plans finally falling back into place hours passing. Blushing as he lay in the comfort of his own ponut, his new personal chair- anytime, anywhere.

Author's Notes:

A $10 story commission for anonymous.