We'll jump (Butch)

Butch: [looking into the deep canyon and the river far below] No, we'll jump.

Sundance: Like hell we will.

Butch: No, it'll be OK - if the water's deep enough, we don't get squished to death. They'll never follow us.

Sundance: How do you know?

Butch: Would you jump if you didn't have to?

Sundance: I have to and I'm not gonna.

Butch: I'll jump first.

Sundance: Nope.

Butch: Then you jump first.

Sundance: No, I said!

Butch: What's the matter with you?!

Sundance: I can't swim!

Butch: [laughing] Why, you crazy — the fall'll probably kill ya!