My son is 15. My talk to him went something like this: There's a lot of porn and nasty things that you can't unsee, so be careful what you look at. Also, those extortion gangs target teenage boys, so if some girl is suddenly hot for you online, come see me immediately so we can troll the ever loving fuck out of them. I think it went pretty well. We like doing things as a family, but more like the Addams family...