Ruby Pinch (Futa)/Pina Colada/Sleep Molestation/Cum Inflation/Futa/Incest/Foalcon

Ruby Pinch was sleepy. Her eyes were drooping closed, and every part of her body was aching and tired. But as much as she turned over in bed, she couldn’t sleep - she was too restless. Something kept her blood pumping, her thoughts spinning around till she felt dizzy. Somewhere in the back of her mind, she registered the heavy weight slowly hardening between her legs, but her conscious mind didn’t really register it. She peered over the side of the bunkbed and saw Pina Colada sleeping on the bed below.

“Psst,” Ruby  whispered. “You up?”

With a thump, she landed on the floor of the bedroom. Her eyes still drooping, she prodded Colada on the shoulder, whispering “Psst.” This time, Colada just yawned and turned away in her sleep.

“Looks...comfy,” Ruby murmured to herself. She grunted as she grabbed hold of the side of the bed and hoisted herself up. Her package slapped against the side of the mattress as she climbed up, a few drops of a warm, milky liquid falling down to the ground.

Where her own mattress had felt lumpy and cold, Colada’s bed felt soft and warm. Ruby smiled to herself as she curled in next to her sister and wrapped her hoof around Colada’s tummy. At the same time, with a wet “schlip”, Ruby’s hardening stallionhood prodded up against the back of Colada’s fillyhood - and slipped inside.

Ruby had never thought much of her “special colt parts,” as Mommy had always called them. She’d played with them once or twice - the “penis,” as Daddy had called it, was fun to smack back and forth across her lap. She’d once asked Daddy why his penis was smaller than hers, and had never even gotten an answer, though he’d turned a funny shade of red when she’d asked. Still, she’d never really thought of her penis - or her balls, which each made a slight indentation in the mattress with their weight - as anything especially pleasurable.

That changed as soon as she entered Colada, as unwittingly as it may have been. Ruby gave a small gasp as the swollen head of her shaft pierced Pina Colada’s small mound, still dripping with precum all the while. Her balls swelled up at the first sign of a mate, preparing to fill Colada with Ruby’s seed.

Ruby grunted cutely, her hips thrusting upward purely on reflex - or perhaps sexual instinct. Colada moaned quietly in her sleep, her already tight pussy closing around Ruby’s massive stallionhood as her womb filled up with pre. Ruby thrust again and again, her innocent filly mind justifying it as simply trying to find someplace comfortable to sleep. After all, there was a heavy, warm, almost unpleasant weight between her legs, and it was making it hard to stay comfortable.

Thrust. Thrust. Thrust. Some animalistic part of Ruby registered the oncoming orgasm, but the filly herself stayed ignorant. All she knew was that one moment, she was a little sweaty, biting her lip and squirming in her sister’s bed, and the next, she could feel a sensation of total relaxation and release spreading through her body as the package between her legs flexed and twitched.

Little Pina Colada barely noticed as her sister filled her up with cum. Her belly started to swell outward from all of the seed that Ruby was pumping into her, her distended stomach starting to rest on the sheets, heavy with all of the sloshing, warm cum inside. Some spilled back out through her fillyhood, covering the base of Ruby’s cock with her own seed.

Soon, Ruby’s distended balls back to a more manageable size, and her cock slowly softening once more. As the feeling of release slowly faded, to be replaced with a totally suffusing feeling of calm, she smiled in her sleep and wrapped one hoof tightly around her sister’s new squishy belly. Within seconds, she too was fast asleep.