Story: GF Turns into Fat Ass Horse During Pony Play (Patreon)

Your girlfriend, Carly, had been eager all week, her eyes gleaming when she suggested pony play. Now, she straddled you reverse cowgirl on the bed, her hips rolling as she rode you, the snug bridle and gleaming bit still in place. Her moans were muffled, raw, almost animalistic, her body slick with sweat as she moved with relentless rhythm.

But something was wrong. Her ass, already full and round, was growing—massive, unnaturally so, the curves swelling before your eyes, straining against her skin. You froze, hands gripping her hips, feeling them widen under your palms, the flesh firming, thickening into something powerful and equine.

“Carly, what the—” you stammered, heart pounding, fear spiking through you.

Her spine arched, a small, twitching nub forming at its base—the start of a tail, quivering with each thrust.

Your eyes darted to her face as she tossed her head, the bridle jingling. Her features were shifting—her nose broadening, pushing forward into the beginnings of a snout. Her nostrils flared, stretching into wide, dark ovals that pulsed with each breath, snorting softly.

The sight was surreal, terrifying—her human face warping, the bridle stretching to accommodate the growing muzzle. Yet, she didn’t stop. She didn’t seem to notice. Her hips ground down harder, a low, guttural whinny escaping her lips around the bit.

Her massive ass pressed against you, heavy and overwhelming, each motion sending jolts of pleasure through your body despite the panic clawing at your chest. You were freaked out—her snout growing longer, nostrils twitching, the tail flicking—but the raw power of her transforming body was intoxicating.

Your arousal surged, shameful and undeniable, as her equine snorts blended with her moans. Her thighs were now immense, clamping around you, the bed straining beneath her growing weight as you struggled to process the impossible, primal pull of her changing form.