You best unfuck yourself or I will unscrew your head and shit down your neck.
7 seconds sound clip from the Jaws (1975) movie soundboard.
You can hear this line at 00:04:05 in the Blu-ray version of the movie.
Quote context
[...]
- Hell, I like you. You can come over to my house and fuck my sister.
- You little scumbag. I've got your name. I've got your ass.
- You will not laugh. You will not cry. You will learn by the numbers. I will teach you.
- Now get up. Get on your feet.
- You best unfuck yourself or I will unscrew your head and shit down your neck.
- Private Joker, why did you join my Corps?
[...]