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 seven 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 and just let him go, looking for something else.