[Marty places headphones over his father's ears and wakes him up by playing Van Halen music at full blast. George wakes up screaming - Marty pauses the music. George looks up to see Marty, who is unrecognizable because he is wearing a radiation suit]
George McFly: Who are you?
Marty McFly: [after giving him another earful of loud rock music] Silence Earthling! My name is Darth Vader. I am an extraterrestrial from the planet Vulcan!
[makes Live Long and Prosper sign with his hand]

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!

Great Scott!

Dr. Emmett Brown

Roads? Where we're going we don't need... roads.

Dr. Emmett Brown

Younger Dr. Emmett Brown: [running out of the room] 1.21 gigawatts? 1.21 gigawatts? Great Scott!
Marty McFly: [following] What-what the hell is a gigawatt?

'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.

Jesus, George, it was a wonder I was even born.

Marty McFly

Bartender: In about ten minutes, he's gonna be as sober as a priest on Sunday.
Marty McFly: Ten minutes? Why do we have to cut these things so damn close?

Marty McFly: Calvin? Wh... Why do you keep calling me Calvin?
Lorraine Baines: Well, that is your name, isn't it? Calvin Klein? It's written all over your underwear.

You'll have to forgive the crudeness of this model, I didn't have time to paint it or build it to scale.

Dr. Emmett Brown

Dr. Emmett Brown: Then tell me, "Future Boy," who's President in the United States in 1985?
Marty McFly: Ronald Reagan.
Dr. Emmett Brown: [laughs] Ronald Reagan. The actor? Then who's VICE-President? Jerry Lewis!

Last night, Darth Vader came down from planet Vulcan and told me that if I didn't take Lorraine out that he'd melt my brain.

George McFly

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