The Joker: Oh, you look nervous. Is it the scars? You want to know how I got 'em?
[He grabs Rachel's head and positions the knife by her mouth]
Come here. Hey! Look at me. So I had a wife. She was beautiful, like you. Who tells me I worry too much. Who tells me I ought to smile more. Who gambles and gets in deep with the sharks. One day, they carve her face. And we have no money for surgeries. She can't take it. I just want to see her smile again. I just want her to know that I don't care about the scars. So... I stick a razor in my mouth and do this...
[the Joker mimics slicing his mouth open with his tongue]
...to myself. And you know what? She can't stand the sight of me! She leaves. Now I see the funny side. Now I'm always smiling!
[Rachel knees the Joker in the groin; he merely laughs it off] A little fight in you. I like that.
Batman: [off-screen] Then you're gonna love me.
[attacks him]