Are you fucking nuts?

Marty:
What do you want to do? Lisa:
I've got to ask you something, Marty. Why do you let Bobby treat you the way he does? Marty:
What? Lisa:
Why do you let Bobby treat you like he does, hit you and stuff, and make fun of you? He disses you right to your face in front of everyone. Derek thinks you guys are queer for each other. Marty:
Yeah well, Derek's an asshole. Lisa:
You know what? I love you. Marty:
Shut up. Lisa:
I do. I love you and I care about you and I don't want to see you suffer. I don't want to see Bobby picking on you ever again. Marty:
Bobby... [he chokes up and cries; saliva comes from his mouth] Lisa:
What? Marty:
It's been like this since we were little fucking kids, Lisa. He's always been like this. Bobby always beats the fuck out of me whenever he wants and there's not a goddamn thing I can do about it. I've begged my fucking parents to move... Lisa:
You could move away yourself! Marty:
I'm not even a fucking high school graduate. Lisa:
Yeah, I know, tell me about it. So there's nothing we can do to stop him ever? Marty:
We could kill him, but that's about it. Lisa:
[smiles]
That's what I was thinking. Marty:
What? What are you talking about? Lisa:
Bobby. Marty:
What about Bobby? Lisa:
What if he was gone? Marty:
What kind of weird shit are you talking about? Lisa:
What if we killed him? Marty:
Are you fucking nuts?