[Marty enters his house and sees Biff harrassing George]
Biff Tannen: I can't believe you'd loan me your car without telling me it had a blind spot. I could've been killed!
George McFly: Blind spot? Now, now, Biff, now I never noticed that the car had any blind spot before when I would drive it. Hi, Son.
Biff Tannen: What, are you blind, McFly? It's there. How else do you explain that wreck out there?
George McFly: Biff, can I- Can I assume that your, uh, insurance is gonna pay for the damage?
Biff Tannen: My insurance? It's your car. Your insurance should pay for it. I wanna know who's gonna pay for this?
[shows his shirt]
Biff Tannen: I spilled beer all over it when the car smashed into me. Who's gonna pay my cleaning bill?