Biff Tannen: 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!
Lorraine Baines: Stop it, Biff, just stop it!
Biff Tannen: Look at him. He's a butthead just like his old man was.
Lorraine Baines: Don't you dare speak that way about George! You're not even half the man he was.
[Biff throws her on the floor]