"When I was going through puberty I was the oldest kid, so I didn't have anyone to talk to about it. I thought it was somehow bad, like it would stunt my growth, so I really tried to stop. I was really late getting hair under my arms, and I thought it was 'cause (of that)... I thought it was because I jerked off too much. There was no Google or anything where I could look it up." Movie star James Franco opens up to Complex magazine about his his teenage masturbation issues.