Mark was looking at his new toy when he accidentally pushed the trigger pointing on himself. Almost immediately, his balls dropped, his cock enlarged, his arms, legs, hands and feet got bigger and muscular and body hair erupted from every corner of his skin.
"What the-?!!" Mark said in a deeper voice as he noticed he now had the body of a senior high school guy. His frame was so big that his clothes were starting to rip off around his muscles and his bigger toes were protruding from his now small shoes.
"How did I get too big?" He wondered as he inspected his new muscles, the hair under his arms and the bulge between his legs. After doing it, he realized that some people had begun to watch him. So, he started to run home. It was easier with his new strength and longer legs, despite his small shoes were now very uncomfortable.
In his home, he quickly moved to his room, carefully avoiding any sight from his parents or siblings. When he was there, he put his toy gun and other stuff in his bed and started to undress. Despite the bulge was so big for his tiny briefs, he decided to keep them on because he felt some embarrassment of seeing himself naked in this condition. Now, he has to decide. Looking for a way to turn back or enjoying being a grown up for a little longer.