Oh, he already knows I don't have sex. I'm too old and gross! Having kids is a great remedy for self esteem!
One time I accidently used the word penis which sent him into convulsions. I asked him, well then, how am I supposed to refer to it. He says, You aren't supposed to REFER to it AT ALL!! You aren't even supposed to KNOW about it! You're a MOM for pete's sake! OH MAN!! Then he lets out this long tortured groan and has to leave the room.
I just keep him around for the entertainment value.