As Mike walked along, he became aware that his shoes seemed more uncomfortable. Like they were getting tighter or something... It wasn't painful yet, so he kept going. Maybe his feet were swelling? His teacher sometimes complained about that. It had never happened to him before, but hey, first time for everything.
Actually, all his clothes were starting to feel tighter. His shirt seemed a size too small for him. His pants, too. It was getting more difficult to walk as they started clinging tighter and tighter, until a loud "Riii-iiip" alerted him that his shirt had gotten torn. And it kept going, as tears appeared all over his shirt, getting bigger as the shirt lost the battle against his growing body. His pants were made of tougher denim, but they couldn't hold out either. His shoes split from top to sole, exposing his growing toes to the air, his socks never stood a chance. Scared and unsure what else to do, Mike tried to unbuckle his pants to relieve the painful pressure, but as he fumbled with them, they began to snap and pop, finally freeing his lower body. As he grew, his clothes were completely shredded and fell off of him. His underwear, with the elastic waistband growing to compensate, but even it couldn't contain his bigger and bigger body, and finally snapped with a 'Twang!', falling off and leaving the poor frightened boy completely naked as he continued to grow. He was now twenty feet tall, and could see that the roof of the house he was standing in front of had some NERF toys stuck on it. Then he shuddered, as his body briefly glowed green, and he shot up to fifty feet tall. Now the top of the house only came up to his naked waist, and he was very frightened. What had happened? What caused this?
Then he remembered the rock. Quickly, he knelt down and searched the rags that had once been his pants, but he couldn't find it. He turned and looked at his right hip, which was were the pocket with the rock had been resting. There was a green mark on his bare skin, and it was already fading. At least he knew what had caused this...
He fell down on his must larger rear end, and looked around, feeling miserable and trying to cover his nakedness.
What could he do now?