The donkey twins, Jace and Saul, remained in their Jacuzzi tub as their shafts went erect once again. They looked into each others familiar eyes, and grinned lustfully. Whatever the resort's magic had in mind, it seemed it didn't want either Jace or Saul to stop their pleasure so quickly.
"I've got an idea.", said Jace.
"What is it?", asked Saul.
Jace climbed out of the bath. Eagerly, his brother following after him. With their donkey penises bobbing high in the air, they dripped water onto the tile floor, and onto the carpeted floor of their main room. They stopped right in front of the bed, where they had triggered the changes at the start.
"Jace?"
"See for yourself!", Jace winked. He bent down, and stood on his hands and hooved feet, presenting his donkey ass to Saul, along with its round, puckered donut. Saul understood Jace's intentions immediately, and smiled filthily.
"Well, if you say so." Thanks to some further mental changes by the resort's magic, the young donkey-man was now quite knowledgable with sexual matters, and knew exactly how to use his cock on his twin. He approached Jace's rear. Positioning his equine cock between Jace's asscheeks, Saul thrust his hips forward, with Jace letting out a bray. Jace's flared cock bobbed below his body, as Saul pumped his cock into Jace's donkeybutt, with his own balls slapping against his twin's.
"Haww...harder!", groaned Jace. Saul obeyed, and rammed harder, letting his cock piston in and out of Jace's anus. He bent down atop his twin's back, braying, as Jace's rectal walls clenched tightly around his cockhead.
As the twin donkey-men fucked passionately, a magical tingling came over them once again. Their bodies shifted once more, with Saul and Jace growing taller and larger, as their fur became thicker, and their tails and manes longer.
"Haww-huh?", Saul voiced, confused as he noticed his stubby fingers fusing to one, becoming hooves like his feet.
"Go with it." Jace panted, as his own hands became hooved too. Saul kept pumping, as their growing torsos reshaped themselves, with larger bellies and stronger backs. Saul couldn't help but support himself against Jace's back now, as the twins were stuck in a posture more fit for four-legged animals.
"Yehaww..." Saul and Jace's voices were getting hoarse, and were finding it harder to speak words. But it didn't matter. As their bodies finished growing, and Saul and Jace's necks became more stiff with muscle, the twins shook and thrusted upon their new hooves. Their testicles slapping against each other as one donkey pumped into another, until once again, they climaxed.
"HOOEEEEE-HAWWWW..!!!", brayed the two donkeys, in loud beastly voices. Jace's cock sprayed with seed below his belly, and so did Saul's; with Jace's anus clenched around his equine cock. They let the spunk splash onto the carpeted floor until finally, it ceased.
Panting, Saul rested himself atop Jace, as their eyes glanced over to the large wall-sized mirror of their room. Through it, they saw two large donkeys, locked in passionate intercourse, with Saul's cock still in Jace's donut. A pair of handsome beasts.
"Hee-awww," Saul brayed softly, as his brother/mate's anus released Saul's spent cock. It flopped down, and slid back into his sheath, as Jace's flared donkeycock also snaked away. Slowly, Saul slid off Jace's back, and his forehooves hit the floor. The twin donkeys admired the new selves; testing their new forehooves, and stepping around.
Jace rotated his ass to the mirror, watching as cum still drippled from his large anus. Playfully, Saul dipped his snout in, and dug into the pucker with his tongue.
"Hawww!," Jace brayed, happily, as he let Saul eat him up; slurping all of Saul's own donkey-seed.
Something else took their attention. Around them, the room shimmered, and changed. The villa's comfy bed faded away, and was replaced with a large pile of hay, while much of the room's furniture vanished. The walls took the appearance of wooden planks and boards, while the carpeting morphed into simple dirt, strewn with fur. The bathroom was gone too; becoming a large basin of water. And the door now also resembled a stable door, with top and bottom swinging doors.
"Hawwww...heee-aww.", Saul and Jace brayed curiously. They trotted around, getting used to their new hooves. It was perfect. A home away from home, for proper hunky animals. The donkeys looked at each other.
"Sauuuhhh.." Jace brayed, with loving eyes.
"Yaaaayse.." Saul replied, smiling with his large, crude buckteeth. They donkeys came close, and kissed.
As if to cement the two's new beastly natures, the donkeys let loose their bladders on the spot. Urine sprinkled from their sheathed cocks, and splattered into growing puddles on the dirt floor. All while their tails flicked about, and their large, flat tongues rubbed against one another in their equine mouths.
Yes, thought the donkey twins. This was right.