Don't say anything, just do it.
4 seconds sound clip from the Deliverance (1972) movie soundboard.
You can hear this line at 00:42:08 in the Blu-ray version of the movie.
Quote context
[...]
- If he tries that again, shoot that one there.
- I'll blow his goddamn balls off.
- You ain't going anywhere, big boy.
- Now, let's you just drop them pants. Just take them right off.
- I mean, what's this all about?
- Don't say anything, just do it.
- You ever had your balls cut off, you fucking ape?
- Lord.
- Lookie there. That's sharp. I bet it'd shave a hair.
- Why don't you try it and see?
[...]