In the car today, driving to school.
Jack (laughing, to Will): Something--something--Presbyterians--something! Ha, ha, ha!!
Me(disbelieving): Did you just say something about Presbyterians?
Jack (tentatively): Presbyterians dress up as devils.
Me: What? They what?
Jack: Dress up as devils.
Me: What makes you think so?
Jack: It's a joke. When we visited the Presbyterian church, people were dressed up. (We wear jeans at our church.)So I thought it would be funny to say they were dressed as devils. I can put that in my joke book. . . . Will didn't think it was funny.
Me: Well . . . it was a subtle joke.
Jack: What does that mean?
Me: It's a joke that needs a lot of explaining.