Young Biff: Why don't you make like a tree and get out of here?
Old Biff: It's leave, you idiot! "Make like a tree, and leave." You sound like a damn fool when you say it wrong.
Young Biff: All right then, leave! And take your book with you!

Biff Tannen, I wouldn't marry you if you had a million dollars.

Lorraine Baines

Biff Tannen: That's about as funny as a screen door on a battleship.
Marty McFly: [under his breath] It's screen door on a submarine, you dork.

Young Doc: No! It can't be; I just sent you back to the future!
Marty McFly: No, I know; you did send me back to the future. But I'm back ... I'm back from the future.
Young Doc: Great Scott! [faints]
Marty McFly: Doc! Doc! Doc!

Marty! What in the name of Sir Isaac H. Newton happened here?

Doc

Doc: The time-traveling is just too dangerous. Better that I devote myself to study the other great mystery of the universe: women!

  • Permalink: women!
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Marty McFly: [Reading newspaper in 2015] "Within two hours of his arrest, Martin McFly Jr. was tried, convicted and sentenced to fifteen years in the state penitentiary." In two hours?
Doc: The justice system works swiftly in the future now that they've abolished all lawyers.

Marty McFly: There he is, Doc! Let's land on him, we'll cripple his car.
Doc: Marty, he's in a '46 Ford, we're in a DeLorean. He'd rip through us like we were tin foil.

Young Jennifer: I'm old!
Old Jennifer: I'm young!

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Back to the Future Part II Quotes

'Ronald Reagan' Video Waiter: Welcome to the Cafe 80's, where it's always morning in America, even in the afternoon. Our special today is mesquite-grilled sushi...
'Ayatollah Khomeini' Video Waiter: [interrupts] You must have the hostage special!
Marty McFly: Hey, hey, hey, hey, guys, hey, hey! All I want is a Pepsi.

Biff Tannen: That's about as funny as a screen door on a battleship.
Marty McFly: [under his breath] It's screen door on a submarine, you dork.