"HEEEEEEEEEEE HAAAAAAAAAAAAWW!!!" Jessica cried out on all fours. Tears filled her eyes because of the animalistic sound she had made.
"W...what hAAAAAppening to me....I....I am becoming a donkey!" she gasped as her hands finish crunching into hooves, a wave a grey fur began to creep up her arms slowly. Jessica could only cry out as further changes wrack her body.
Her ass began to swell larger, her womanhood moving back between her butt cheeks as it's normal pink flesh became an asinine black. Her breasts began to travel down her body between her back legs to become a dark black pair of teats.
"No....pleeeaseeeee! I don't wanna be a donkeeeeeeeee! Someone help meeeeeeee pleeeeehaaaaaw! HEEEEE HAAAAAAW! HEEEEE HAAAAAAW! HEEEEE HAAAAAAW!" She sobbed one last time as her voice is degraded into the dimple brays of a donkey. Her arms finished changing and her neck began to stretch out longer, her body now engulfed in brown donkey fur that slowly traveled up her changing neck.
She closed her eyes tightly as her face lengthened and swelled, her nostriles flaring largly on the end of her new donkey muzzle. The fur finished coating her changed face and she opened her eyes which remained a human blue. She stood there shivering slightly, now a brown furred donkey with a black mane and tail tuft. Stephanie brayed weakly and shakily turn on her new legs to come face to face with James. He was a complete jackass now.
She turned to face his now twice as long cock, the musky smell of it was just as alluring to her as her pussy must have been to James.
Jessica felt a warm spread from her like she never knew before, and with this warmth...brought a lustful urge that was too powerful to ignore. She stood up and braced herself against the wall, and parted her panties for James to get a clear view that her vagina was changing...into a donkey's pussy, perfect for a real jackass to claim as his own. Before she knew it, James was there and teasing the folds of her changing pussy with the tip his cock, "Pleeeeeseeeeeee! Hee Haw! Hee Haw! Mount meeeeeeeeeee! Haaaaaaww! Hee Haw! Hee Haw!" she brayed more than said to James.
He couldn't hold back anymore, he needed to mate with her...because that is what donkey's like them are supposed to do when a jennet as Jessica is so clearly in heat. And that was the last human thought either of them would have the rest of the night. James began pumping his donkey cock in and out of her with great speed and desire, it was a little painful for Jessica at first. Her pussy wasn't not finished becoming a Jessica donkey's pussy yet, but after a few minutes that changed and they went at it even more.
Then their clothes pushed out their maximum stresses the stitching would allow. All that was left was his shoes and her nearly skin tight boots.
In their mating, they were more donkey than human. Jessica's brays began to grow more and more urgent, James knew she was only moments away from and orgasm.
On and off the rest of the night, the mated again and again like donkey's are suppose to do when a jennet is in heat. The Coachman finally came into the pool hall where the sleeping donkeys were, but the old man could only smile. The Coachman kneeled down and petted the creatures until they woke up, and handed them two white cabbages. The animals brayed in delight, having just woken up from on and off all night mating session, they were hungry.
They were sold to a donkey breeder farm where James and Jessica became happy asses. Neither was completely as freaked out as they probably should have been. They are still together.