My friend often touches himself in front of his friends
My friend( yes it is my friend not me) has a habit of touching himself a lot. the thing is he does it right in front of us. We'd be watching a movie, or listening to music and he'd just put his hand down his pants. he doesn't jerk off in front of us, just plays with himself a bit and keeps his hands down his pants often. He's been doing it in front of us since he was 12. it doesn't bother us but i still wonder if its normal. he even does in front of his parents (he's married and totally straight btw). The reason i'm asking is because I have a son and although he's still a baby he already likes playing with himself and giving himself erections. Eventually i'll have to talk to him about when that's appropriate and when it's not. However growing up with a person who thinks touching himself in front of friends is normal, the borderline of what's appropriate or not is a bit blurred in my head. Any advice? Is it normal to touch yourself in front of friends? What age should i talk to my child about it? Is it normal for a child to touch himself in front of his parents when he's older (say 11 or 12, my friend used to)? If not, at what age does it become inappropriate?