Daughter: Do you know the S-word?
Son: Yeah.
Daughter: What is it then?
Son: “Stupid.” And I know the M-word: “moron.”
Daughter: Everybody knows those words.
Son: What other letter words are there?
Daughter: I don’t know.
Son: Let’s make our own letter words!
Daughter: Uh, I don’t think that’s a good idea.