Looking down at Buck, Ty grinned.
"Well, now. We can't have that can we?" As he said this, Ty willed Buck back to the land of the waking.
With a gasp, Buck staggered upright, looking around wildly. Finally his sight landed on Ty, before he glanced down at the ground, seeing the think white gooey splatters of their little romp. Looking back up at Ty, he said the only thing that came to mind.
"Oh. Oops?"
They looked at each other for a moment before bursting out laughing. After a moment, they calmed, and sat down on the forest floor after Ty willed the puddles away.
"So... what now?" Buck asked.
"How about some more changes, if you don't mind?"
"Go for it!"
Ty grinned, and started to open his mouth, before pausing and cocking his head in a pondering many. "Before that though, would you mind if I got out of these clothes. I feel a bit over dressed now."
"Uhh... sure..." Buck said hesitantly, and not without a good bit of confusion. "Isn't that you skin though?"
"No, silly!" Ty laughed. "These are clothes. Humans have to wear them in order to keep ourselves warm and safe, since we don't have fur or scales."
"Oh." Buck mumbled as he curiously watched Ty strip. Glancing between Ty's legs, he cocked his head. "Uh... Is it normal for all humans to be that... umm... small?"
Blushing in embarrassment, Ty shook his head. "No, I rather on the small side. I've been thinking of changing it, but not quite sure how. Eh, anyways, let's worry about you first."
"Ok." Buck said, standing back up. "So, what first?"
"Well, I don't know about you, but I've always wanted to have a bigger cock."
"Um, yeah. I think all guys do at one point or another."
"Ok then. Let's see how this feels." Grinning, Ty silently willed Buck's genitals to double in size.
Buck gasped as his cock and balls started to tingle. First, his cock started to extend and thicken, steadily growing larger by the second. Finally, it settled down at a very pleasurable 16 inches long, slender and tapered. Next his balls churned, expanding rapidly as they exploded out from the size of a golf ball to the size of fresh plums.
Buck looked back through his front legs, grinning stupidly as he saw his new, enhanced package. Looking up at Ty, he could see the teen was aroused from the display as well, his cock a pitiful 4 inches hard, with barely grape sized balls beneath it.
As Buck raised an eyebrow, Ty's grin widened and he nodded. This time, he decided to change the wish a bit, as well as say it out loud.
"I wish that my cock and balls will grow and change into the genitals of a prize stud stallion, starting when I stop speaking for more than 5 seconds. I also wish that I will be flaccid during and after the change until I speak the words 'Hung like a horse.'"
Exactly five seconds later, his cock suddenly deflated down to it's 2" flaccid state, before it started to extend, getting longer and thicker than his forearm. As it grew, it pulled up towards his stomach, his foreskin attaching itself to the skin there and completely covering his still-growing cock. Still, it grew, as did his newly formed sheath, only stopping shortly before his belly-button was enveloped in the soft, leathery flesh. Next, his scrotum proceeded to get much larger, and hang about 1/2 to 3-4 of the way to his knees. By now, his balls looked almost comically small in his massive scrotum. That soon changed, however, as his balls started expanding to the size of large grapefruits. Finally, the skin on and around his crotch darkened to black, before being covered by short, soft, ebony fur.
Buck gasped, looking at Ty's huge organs, before staring at him. "A horse, really? Are you trying to make me feel inferior or something?" Despite what he said, Buck had a huge grin on his face the entire time, showing Ty that he actually liked the change, no matter what he said.
Looking at each other, eyes feasting on their enhanced genitals, both of their packages twitched with desire.