Bitch, you better back up before you get your ass whipped.
3 seconds sound clip from the Black Belt Jones (1974) movie soundboard.
You can hear this line at 00:36:39.116 in the Blu-ray version of the movie.
Quote context
[...]
- What do you want him for, little mama?
- Now, which one of you is Pinky?
- Bitch, you better back up before you get your ass whipped.
- I'll make you look like a sick faggot.
- You better tell me where Pinky is or we can start this thing all over again.
[...]