You son of a bitch!
2 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 00:48:01.012 in the Blu-ray version of the movie.
Quote context
[...]
- Hold on one second. Let's get this straight. Marty is your kid, not mine.
- And all the money in the world wouldn't do jack shit for that lazy bum.
- Stop it, Biff. Just stop it.
- Look at him. He's a butthead, just like his old man was.
- Don't you dare speak that way about George. You're not even half the man he was.
- Always the little hothead, huh?
- You wanna take a poke at me?
- Damn it, Biff. That's it. I'm leaving.
- So go ahead. But think about this, Lorraine!
[...]