He's in that habit of saying, "That's so gay!" but has made an effort to not do so around me. I've explained to him that it's not just me that he shouldn't do it around, as one never knows who The Gays are. We are a mysterious breed of wisps... like shadows in the night - we are everywhere and nowhere at the same time.
Context is from a comment in my f-locked entry but quoted with permission. :)