As Luke waddled out the locker room, he ran into James, the forward for the team. He knew Luke very well.
"Dude what the hell happened to you?" James asked, eyeing the enormous bulge in Luke's basketball shorts.
"Don't know, but damn look at this thing. I just changed for basketball and then it grew like crazy!" and with that, Luke slipped off his shorts and James could clearly see that it wasn't fake. "Jesus, that's huge" James murmured, "well good luck hiding that during practice, it's enormous. I'm going to get changed" and he brushed past him to get into the locker room.
Finding his locker and setting his backpack down, James opened it and took out his basketball jersey, shorts and shoes. He pulled off his shoes and slid his pants down so that he could change into his basketball shorts. Suddenly, he felt a tingling spread throughout his cock...
"What the fu-uuuunnnnhhh" James' exclamation turned into a moan halfway through as his underwear went from loose to tight to extremely tight. His balls swelled from their previous size to the size of tennis balls, while James' new 14 inch cock coiled up inside his underwear and stretched it out extremely far, creating a ludicrous bulge close to the size of a melon.
Recovering from the pleasure of his growth spurt, James was still feeling the extreme tightness in his groin. Looking down, he gasped and immediately slid down his stretched-out underwear to see what had happened. Out flopped his cock and balls, but then James felt a tingle once again. This time, he saw it begin to stretch and thicken larger and larger before his eyes! His balls also once again plumped up, this time to the size of melons. When it was over, James was forced to dress in a pair of basketball shorts with a two foot long cock and two melons in his crotch. It looked ridiculous, but then again Luke had done it just a couple minutes ago, why not...