My work here is done.

As a parent, one of my raisons d'etre is to embarrass and discomfit my teenage children.  Talking about sex does not work -- they're modern kids, and are more or less comfortable with those sorts of discussions, as long as the conversations are serious and restrained.*

However, I have discovered a secret weapon....

It makes Railfan sing loudly "I can't hear you lalalalala" and the Red Headed Menace flee the room.  What is this gem?

Tom Lehrer's "Masochism Tango."

Hehehehe.  Guess what is going to the top of my iTunes playlists?

*Actually, they tend to initiate discussions -- and questions -- about sex.  I think they are trying to discomfit me. I usually tell them to ask their father.