My son has been bullied around and recently I found out that he is taking it out on someone he finds weaker and non-intimidating. He asked a friend if he knows about sex and to see his privates. The mom was understanding enough to not make a huge deal about it but to just let me know so that I can talk to him about it. Does he need counseling? He said he was just curious how his friend would react, but I'm worried that it could escalate to something far worse. Please advise!