The Dark Knight (2008)
scars2
The Joker:"Well, you look nervous. Is it the scars? You want to know how I got 'em? Come here. Hey! Look at me. So I had a wife, 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, hm? 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 to myself. And you know what? She can't stand the sight of me! She leaves. Now I see the funny side."