Derricks eyes widened and his nostrils flared - the stable was rich with mare scent. His human mind was confused, but the stallion instincts kicked in and he started to pound painfully erect. Mortified, Derrick turned away fro the other equine morphs and looked for a stall to hide in. Before he could get inside, the bigger mare shuffled over and whickered. "Don't run away, stud. I have something for you." She turned and lifted her tail to reveal a slick black opening that was clenching and releasing. "Don't you want to try out that nice big new tool of yours?"
Derrick flushed as a shudder of desire rippled through his body and a strangled neigh escaped his muzzle. The massive black cock that swung from his crotch was fully equine, as were the huge testicles underneath. Part of him was scared of having sex - so many warnings and cautions from school, parents, friends. He struggled against an nearly overwhelming desire - stallions instincts were raging in his head, demanding that he mount this female.
Some of the other female morphs were gathering to watch, making him even more self-conscious. "Maybe he wants to mount something smaller than a city bus," a donkey-morph whickered. The big female snorted. "He'd split you in half with that cock, donkey-girl. I can take it and give him more." That causes some equine snorts and laughs that made Derrick even more uncomfortable.
The big mare looked back at him. "This should be a dream come true for a young stud like you! A barn full of willing females and a cock as big as your human arm used to be. What are you waiting for? It's not like you have to worry about paternity suits or STDs. The magic has us all healthy, and stallions don't have any responsibility at all."
Derrick was trembling with desire, equine hormones raging and his human morality fighting a losing battle against the stallion. He knew that Daisy must have intended this - she'd made him even more equine with her 'extra work', and never given him clothing as promised. Not that he really minded - he loved this powerful body and the sensations it gave him. At least, as long as it was just for the vacation. The mare was huge, but he wasn't much smaller. And had she said something about giving him 'more'?