Dustin kept walking around the department store, discreetly looking for the bathroom. He wondered where the boy had gone, as he wanted to continue for fun and see how the boy would end up.
"Aha!" Dustin exclaimed as he saw a familiar sign. He rushed into the bathroom, pretending to use the urinal. He noticed the boy was in one of the stalls. I wonder if it will still work if I just stare at any part of the boy, he thought. Dustin could see the boy's basketball shoes in the stall, though the laces were undone to make room for his larger feet. Dustin didn't know it, but the surge in testosterone from the boy's already generous balls had given him a growth spurt.
Dustin focused on the boy's feet, intensely staring. At first, nothing happened, and he was about to give up after around 10 seconds when he quietly heard a gasp, followed by the sound of cloth ripping. Dustin grinned, and kept staring. He heard more tiny rips. The boy began to groan, at first quietly then louder. Dustin could also hear that as the boy continued to moan, his voice deepened ever so slightly. Finally, Dustin noticed that the boy's shoes looked like they were on the verge of ripping. He kept staring. Finally, with a loud RIIIIP, the shoes split at the seams and the boy's new larger feet exploded outwards. Dustin stopped staring, and quickly faced forward discreetly. He pretended to be using the bathroom, but was watching the door to the stall intently. He heard the door unlatch and then the boy walked out.
Dustin had not realized the effect the boost in testosterone would have on the boy. Dustin now had to look up at the boy, as he towered at 6'4". His shirt rode high off his body, exposing several inches of midriff, complete with deep abs. His shorts had ripped off and he now had only his jock on. Said jock was struggling to contain his now 14 inches of thick cock, and large apple sized balls. His feet were now at least 5 sizes bigger than what he had walked in with.
The boy started as he saw Dustin, "Oh sorry dude, didn't mean for you to hear any of that!" he quickly stammered out, though coupled with his deep voice it sounded hilarious, and he ran out.