I Saw the Devil (2010)
Kim Soo-hyeon: I will kill you when you are in the most pain. When you're in the most pain, shivering out of fear, then I will kill you. That's a real revenge. A real complete revenge.
Kyung-chul: Hey. Cut the bullshit. You already lost. You think you got me? Huh? Fuck you. I don't know what pain is. Fear? Don't know that either. There's nothing you can get from me. So... You already lost. Got that?
Kyung-chul: Why do you look like you stepped in shit? -
[as his latest victim realizes her predicament]
Kyung-chul: Why you little... Gone insane from eating human flesh? Wake up! I'm Jang Kyung Chul!