Ty waited a bit until a new boy walked up. Bingo, he thought, I can grow this guy.
The boy sat down on the bench and pulled out his phone. He looked to be 14, about five and a half feet tall, and fairly lean, but athletic as well. He had slightly bigger feet than normal, Ty guessed he was on the cusp of a growth spurt. He looked through the boy's shorts and saw that he was average down below. Oh well, what's another growth on top, he thought and made the wish. He also wished that everyone would think this was perfectly normal, except him and the boy.
Luckily, the boy had spread his legs wide while sitting on the bench, giving Ty a perfect view of what was about to happen. The boy was also wearing fairly tight but stretchy shorts, which meant the show was starting soon. As if on cue, the boy moaned out loud, and Ty was excited. He waited for a visual cue. Just as he thought his wish wasn't working, he spied a small hump in between the boy's legs. As he watched closer, he realized that the small bulge was slowly swelling up. It was working!
The boy continued to focus on his game, seemingly ignoring the tightening of his briefs. Ty had a perfect front row seat. The boy's shorts continued to bulge outwards more and more, slowly expanding. Ty estimated that the boy was now packing the same length soft as he was previously hard, around five and a half inches.
As the bump continued to grow, it started to become more defined. Ty realized that the outline of the growing boy's cock head was starting to be visible in his tight shorts. He watched as the boy's cock pumped up one last time and finally stopped expanding at eight thick soft inches. The cock outline looked hilariously out of place on the boy's frame, but he just continued to play games on his phone as if nothing was happening. Ty laughed, then he moved on to the next part - feet.
The boy already had slightly larger feet than normal, but Ty wanted to change that. He wished himself to be invisible so he could go closer and have a better look. Then he willed the boy's feet to grow a size larger. Immediately Ty saw the boy's shoes stretch out, he saw the seams straining as they were now covering a size-too-large foot. Ty would rather not have that, so he wished for the boy to remove his shoes to be more comfortable. The boy immediately kicked off his high tops, but left his socks on, then went back to playing his game.
Ty had a funny idea. He wished for the boy's shoes to grow to a Size 18, then he wished for the boy's feet to grow to a matching size when he put the shoes back on. He willed the boy to put the shoes back on and watched as the boy laced up the much-too-large sneakers.
As the boy played his game, he felt tingling in his feet, but ignored it. His feet slid across the sole of the shoe until they were a Size 18, a perfect fit. Ty just laughed, he was the kid with big feet and a big cock now!