Luckily ty found himself growing bigger to hold his muscles. He grew to a height of 8 feet before he managed to stop.
Ty had to step back as far as he could to look in the mirror. His head was just touching the celing. He needed some new clothes as his were ripped due to his huge size, and his shoes didn't fit his broad, horny size 18 feet.
"Woah!" he said "I'm even bigger than Mark! Talking of which.." he hammed on the wall between his and his foster parents.
"I'll teach you to make a racket, birthday or not!" yelled Mark as he stormed out of bed and headed for Ty's room. When he saw the giant boy though, he just stopped in his tracks.
"And how are you going to do that?" asked Ty, smiling.
Mark just stared for a while, and then...