Ty heard the water start up in the bathroom. He knew Dustin was in the shower, and he would be there for at least 20 minutes. Mark his foster father would wale into Ty if he spent one second more than 5 minutes in his shower. Still since Dustin took such long showers, and Ty wasn't allowed to take his until Dustin was done, Ty really didn't have time for even a 5 minute shower if he was going to get to school on time.
Ty whispered to himself still uncertain of his powers, "Did I really make Dustin younger?" He shook his head. He needed to be sure. He looked at the bathroom wall, and wished he could see through it so that he could watch Dustin as Ty tested his ability to transform his foster brother.
His eyes widened as the wall became like glass, but Dustin didn't seem to notice he was standing there in the shower lathering up, and continuing to examine his now prepubescent body.
"Aw, Dustin's sad that he's so immature," mocked Ty, "Maybe if he matured a bit..." Ty bit his lip and watched as a single chest hair sprouted on Dustin's chest.
Dustin held the hair out from his chest, and gazed down at it. He gasped. Had it been there all along and he missed it? How could the hair grow so fast? Maybe Ty's spell was wearing off, maybe it was the soap and water. Dustin began scrubbing his body maniacally to try to wash away Ty's magic.
Ty laughed and started adding body hairs. First, a light dusting under his armpits, and then more hairs on his legs and his crotch. Dustin grinned as the hairs covered his body, but he noticed he was hairier than he had been, and getting hairier. Also, while he seemed to be growing through puberty, he was not growing any bigger.
Dustin started to look concerned, as he held two to four inch matted hairs out from his chest. His other hand slipped over his hairy ass cheeks, and he jumped with a start as he felt something jutting out of his tailbone. His hand closed around it and he blurted out, "I've got a tail? Wha-woof! Woof!"
Dustin fell to all fours in the shower. His body quivered and convulsed as Dustin's last remnant of humanity vanished as he became all dog.
"I always wanted a dog," Ty said, "guess, I've got one as a birthday present finally." He grinned watching the dog shaking its furry coat in the shower.
The door swung open it was his foster father Mark, he glared at Ty, "I thought you were in the shower?"
"Oh, that's Dustin," Ty answered without thinking.
"Dusty? You put the dog in the shower? You're supposed to wash him properly with flea powder. He might get sick, and he's a championship stud dog!" Mark said angrily rushing into the bathroom and rescuing Dustin from the shower.
"There, there, boy, I'm here now. Did that mean old Ty throw you in the shower, boy?"
"Woof, woof, woof, woof, woof, woof!" barked Dustin frantically.
"I wish I could understand what Dustin was saying," said Ty and instantly he understood the barking dog.
"Dad, dad, it's me, Dustin! Ty turned me into a dog. Make him turn me back," barked at Mark who was oblivious to what to the fact that his dog was really his own flesh and blood.
Ty rocked back and forward on his bed laughing at the spectacle he was watching through his wall.