From now on, you will speak only when spoken to and the first and last words out of your filthy sewers will be sir.
9 seconds sound clip from the Jaws (1975) movie soundboard.
You can hear this line at 00:01:37 in the Blu-ray version of the movie.
Quote context
[...]
- I am Gunnery Sergeant Hartman, your senior drill instructor.
- Do you maggots understand that?
- Bullshit. I can't hear you. Sound off like you got a pair.
- If you ladies leave my island, if you survive recruit training you will be a weapon.
[...]