The Joker: Stop me if you've heard this one, Batman: Two fellows in an abandoned party favor factory. One says to the other...
Batman: Where are you keeping the gas, Joker?
The Joker: You call that a punch line?
Batman: I don't share your sense of humour.
The Joker: Yet we're linked, you and I. Like comedy and tragedy. Two sides, same coin.
Batman: The gas, Joker, or I vow I will turn your smile upside down.
The Joker: Well, if it's gas you want...
[He throws a playing card at a brown bag, which falls to the stage floor. Batman dodges it in time]
The Joker: Place all tray tables in their upright positions.
[Joker laughs maniacally]