I: How many Slovaks does it take to screw in a lightbulb?
JUSTIN: Ooh, I dunno... four? I dunno.
LINDSAY: I'm gonna have to say two.
I: (to Justin) So you don't know?
JUSTIN: Well, no, I said four.
I: Um, don't you mean "I don't know, Meghanne, how many?"
JUSTIN: No, I mean four.
I: No, you have to say you don't know.
JUSTIN: No, you have to guess a number.
I: No, you don't, or the person telling the joke can't bounce off of it.
LINDSAY: I said two.