A father discovered his 13-year-old son had downloaded a bunch of porn onto his computer. How did the dad handle this? He wrote him a letter, essentially saying he wasn't doing anything wrong, but he needs to be careful so he doesn't ruin the computer.
I have had "the talk" with my two older boys, but we've never really discussed porn. I guess I better do that. Ugh. There's nothing I enjoy more than incredibly awkward conversations with teenage boys that don't want to talk about anything.