"Oops!" Ty suddenly appeared next to him. "Sorry - guess a Clydesdale stallion doesn't meet the zoning restrictions." A wave of the teen's hand froze everyone in position, and another changed the scene arounds them to a large, rolling pasture. "There. That's better."
Mike's nose was suddenly picking up wonderful scents - grass, clover, dirt, his own sweat-urine scent, and a few other horsey smells that made his penis stir. Mares.
"OK, Mike." Ty moved in front of the huge animal. "Here's the deal. You screwed up big time. I told you to play this as if it was real, and you played around instead. So you are out of the game and stuck as a horse."
He whinnied in fear. He didn't want to spend the rest of his life as a beast!
Ty stepped back and grinned. "It was your choice, buddy. But I'm feeling generous. I've got to go back and finish up the game with the others. When it's all over with, I'll come back and see what I can do for you."
He pointed to a large group of horses on the far side, where the odor of mares was coming from. "Just to keep things interesting, at least four of the mares over there are in season. Each time you fuck one of them, your soul will become part horse. Some of the older mares will try to get you to nurse from them, and you'll get younger with every squirt of milk. And the other stallion will be trying to make you into a filly so he can mount you. Play around all you want, as long as you don't end up with a totally equine soul. Once that happens, I can't change you back at all. Have fun!"
Then Ty vanished, leaving Mike staring at the approaching herd of fellow Clydesdales.