Kayla’s heart pounded in her chest as sweat made her whole body shine from her soft skin to the black fur of Warrior’s body… her body. It was still surreal to think that her lower half was that of a viril stallion. Exceptionally viril it seemed. As the tingles Alyssa’s cum was sending up her spine as it ran down her backside and dripped off her still swollen sack was getting her blood up once again. Her stallionhood stood taller with every heavy plap of spunk that fell to the floor until it slapped against her lower belly. She shuddered as sparks jolted across her crotch like electric butterflies.
Alyssa looked down as she heard the meaty thwack of flesh against flesh and smiled. “Looks like you’re feeling up for one more round?”
Kayla opened her mouth to respond, but her cock answered for her as it stiffened once again slapping herself. Her stomach fluttered and all she could do was bite her lip and moan.
Alyssa nodded. “I’ll take that as a yes,” she said, turning around and presenting her ample rear to Kayla. She flicked her tail flagging her round donut at her a few times before drawing her tail all the way to the side. “Well, go on. It’s all yours.”
Kayla didn’t need anymore encouragement as her front hooves sprung off the ground and she reared on top of Alyssa. Her front legs curled around Alyssa’s withers tightly as she bucked her hips desperate to spear herself on her friend. Her body grew hot, and her heart sounded like a freight train in her ears. When her cockhead finally hit it’s mark Kayla felt dizzy from the euphoria.
Instinctively she began to thrust. She bent forward and hugged herself tightly against Alyssa’s human back. Her cheek brushed against a trail of coarse hair that was spreading down Alyssa’s neck to between her shoulder blades. Kayla stared at it transfixed for only a moment until she felt compelled to bite down tenderly on it for even more purchase as she continued to jackhammer away at Alyssa’s asshole. Alyssa let out a gasp that didn’t quite sound human as tried her best to reach behind herself and hold Kayla against her.
All the while Kayla’s body sparked like a shorting out battery. Her belly was ablaze as if tickling fingers of fire and ice were caressing her inside and out. Her cum-drenched rear tickled like mad, and as she felt her stallionhood begin to seize up as another sensation began to boil over inside her as if she were being hollowed out and filled back up with pure pleasure. When she felt her nuts slap against Alyssa’s rear for the final time before tightening up she screamed as her body exploded twice. Once from her male orgasm that unleashed a geyser of hot-spooge into Alyssa’s ass. So much so that if backfilled by the third rope and sent puddles of it streaming down Alyssa’s rear.
The second was strange in that it was familiar though easily a thousand times more potent than it had ever been before. She trembled as the orgasm reverated through her body like an earthquake. For a minute she did not breathe. For a moment she did not think. For a second it was a question if she even existed at all as anything other than a being of pure sexual release.
Eventually, with equal parts relief and disappointment, Kayla became aware again. She shakily dismounted from Alyssa who had at some point rested herself up against a support beam of the barn for extra stability. She looked blasted in the best possible way. Hair and body shiny with sweat a new and luxurious mane running down her back.
“That-,” Alyssa wheezed, “that was the best sex I’ve ever had.”
“What ha-,” Kayla said, feeling as if she’d just ran and won a triathlon. “What happened?”
Alyssa raised an eyebrow. “What do you mean?”
“Something felt strange,” Kayla said as she trotted around in a circle looking at herself. “When I came I felt-”
“HOLY CRAP!” Alyssa shouted.
“What?!” Kayla said ice ran through her veins as she desperately tried to see what was wrong with her.
“Y-you have a pussy again!” Alyssa said pointing at Kayla’s rear.
“I-what?” Kayla turned her rear toward the tack room’s mirror and gaped. She indeed had a brand new mare pussy that looked slightly large even on her equine hindquarters. It was a leathery, smooth teardrop shape of flesh settled just below her asshole with the same dappling of pink and black as her male equipment which still sat just as they had before. Though her sack was now being glazed from a stream of fem-cum that had likely accompanied her female orgasm. Now it was obvious she’d cum from both at the same time.
“Oh, wow.” Kayla said as she marveled at it. “You know. I feel a lot less apprehensive at least having that back.”
“Even if a little horsified?” Alyssa chuckled, crossing her arms.
Kayla shrugged. “It now fits my new appetite.”
Alyssa let out a very equine snort. “It’s not fair that you got yours back. I’m still all male back there.” She threw a thumb over her shoulder.
It was strange. Kayla had figured since she’d “merged” with Warrior that she would be stuck with only what he had. Then again, Alyssa didn’t merge with anything. She’d just grown a horse body after...
“After being filled with my cum,” Kayla said. She thought back to the cum that had been running down her taint after Alyssa had given her anal. Then Kayla looked over at Alyssa and saw how she had just as much if not more seed splattered across her backside than she’d had.
“What?” Alyssa asked, flicking her tail in irritation.
“Oh, just a theory.” Kayla said, smiling. One she wouldn’t have to wait long to confirm.