Carl: Hey, Marshall. What'll you have?
Marshall: What'll I have? Um, I don't know, maybe a beer and that nude painting of me hanging behind the bar!
Carl: Ooh, I'm sorry, that painting's property of the bar.
Marshall: I know that Barney gave you that painting.
Carl: I don't know what you're talking about.
Marshall: Whatever he's paying you, I'll pay you double.
Carl: I doubt it.
Marshall: Whatever he's paying you, I'll give you that plus ten bucks.
Carl: I doubt it.
Marshall: All right, you know what, Carl, you just lost yourself a regular customer.
Carl: I doubt it.