I noticed!
Yeah, I was thinking that he mostly likely ejaculated while watching, and because he's too young to understand, put his shorts down to see what caused the stickyness in his shorts. Never really thought he masturbated though, which he could have done too.
I thought the same , but was not sure :S
I noticed too, but since he looked so young I can't tell if he touched himself or something.
Did anyone else notice that when he was watching his dad with the chick, I think he had his pants down and he had masturbated or something. Then she called him disgusting, which really explains a lot, why he things he's so dirty.