Oh there is NO DOUBT that he knows!
My daughter encourages me (she turned me on to The Showcase Theatre!), and even dyes her hair black now and then, or green or purple or whatever.
But yes, I am afraid there is something of a "cultural divide" in my family:
My wife and son like Hip-Hop, and my daughter and I like...darker things.
The neighbors all whisper and gossip about us, which is funny, because they are all conformist clones, and my family and I talk about them!