Lorraine Baines: Will I ever see you again?
Marty McFly: I guarantee it.

Time circuits on. Engine running. Flux Capacitor... fluxxing. All right!

Marty McFly

George McFly: Now, look. I'll finish those reports on up tonight, and I'll run 'em on over first thing tomorrow. All right?
Biff Tannen: Not too early. I sleep in Saturday. Oh McFly, your shoe's untied.

Hey, McFly. I thought I told you never to come in here.

Biff Tannen

Dr. Emmett Brown: Have them go on some sort of social...
Marty McFly: You mean like a date?
Dr. Emmett Brown: Right.
Marty McFly: Well, what kind of date? What do kids do in the '50s?
Dr. Emmett Brown: Well, they're your parents you must know them. What are their common interests? What do they like to do together?
Marty McFly: Nothing.

Marty McFly: Mom... is that you?
Lorraine Baines: There, there now. Just relax.

Marty McFly: Lorraine, What are you doin'?
Lorraine Baines: I swiped it from the old lady's liquor cabinet.
Marty McFly: Yeah, well, you shouldn't drink.
Lorraine Baines: Why not?
Marty McFly: Because you... you might regret it later in life.
Lorraine Baines: Marty, don't be such a square. Everybody who's anybody drinks.
Marty McFly Geez! You smoke too?
Lorraine Baines: Marty, you're beginning to sound just like my mother!

Marty McFly: Do you mind if we... park... for a while?
Lorraine Baines: That's a great idea. I'd love to park.
Marty McFly: Huh?
Lorraine Baines: Marty, I'm almost 18 years old. It's not like I've never parked before.
Marty McFly: What?

Dr. Emmett Brown: Look. There's a rhythmic ceremonial ritual coming up.
Marty McFly: Of course! The Enchantment Under the Sea dance! They're supposed to go to this. That's where they kiss for the first time.
Dr. Emmett Brown: All right, kid. You stick to your father like glue and make sure he takes her to that dance.

Oh... one other thing. If you guys ever have kids and one of them when he's eight years old accidentally sets fire to the living room rug... go easy on him.

Marty McFly

Biff Tannen: What are you looking at, butt head?
Skinhead: Hey Biff, get a load of this guy's life preserver. Dork thinks he's gonna drown.

Hey Dad, George. Hey, you on the bike!

Marty McFly

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Back to the Future Quotes

[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]

[Biff is waxing George's car, it's a silver BMW]
George McFly: Uh... now Biff, I want make sure that we get two coats of wax this time. Not just one.
Biff Tannen: Just finishing up the second coat now.
George McFly: Now Biff, don't con me!
Biff Tannen: I-I'm-I'm sorry, Mr. McFly. I-I meant I was just starting on the second coat.
George McFly: Ahh... Biff. What a character. Always trying to get away with something. I've had to stay on top of Biff ever since High School. Although if it wasn't for him...
Lorraine Baines: We never would have fallen in love.
George McFly: That's right.