Bruce Wayne: I know who you are. Let me tell you about this guy I know, Jack. Mean kid. Bad seed. Hurt people.
The Joker: I like him already.
Bruce Wayne: Now you know the problem was... he got sloppy. You know? Crazy. He started to lose it. He had a head full of bad wiring, I guess.
[Walks towards the fireplace]
Bruce Wayne: Couldn't keep it straight up here.
[Points to his head]
Bruce Wayne: He was the kind of guy who couldn't hear the train until it was 2 feet from him.
The Joker: Hmm.
[Smiles and nods his head]
Bruce Wayne: You know what happened to this guy, Jack?
The Joker: [Shakes his head]
Bruce Wayne: Well... he made mistakes. Then he had his
[grabs a poker and smashes a vase]
Bruce Wayne: LIGHTS OUT! Now you wanna get nuts? Come on! Let's get nuts.