You better watch your motherfucking mouth.
3 seconds sound clip from the Menace II Society movie soundboard.
You can hear this line at 00:54:56 in the Blu-ray version of the movie.
Quote context
[...]
- Goddamn. This shit is gonna be good. Real good. Real good.
- The Holy Koran says that if you...
- I don't wanna hear that shit right now.
- How you be talking to the other bitch?
- You better watch your motherfucking mouth.
- Yo, Wax. Turn that motherfucker up, man.
[...]