You're dead, you little son of a bitch!
2 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 00:59:11.765 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, and he told me one more thing.
- Funny. I never thought it would be you.
- Yeah, well, Biff, you're forgetting one thing.
- You're dead, you little son of a bitch!
- Go ahead, kid. Jump. A suicide will be nice and neat.
- What about the police, Biff? They're gonna match up the bullet with that gun.
[...]