Officer Reese: Hilldale, nothing but a breeding ground for tranks, lobos and zipheads.
Officer Foley: Yeah, they outta tear this whole place down.
Officer Reese: You got a little tranked, but I think you can walk.
Officer Foley: Ma'am, you should reprogram, it's dangerous to enter without lights on.

[in TV ad] Hi friends, Goldie Wilson III for Wilson Hover Conversion Systems. You know, when my Grandpa was Mayor of Hill Valley, he had to worry about traffic problems. But now, you don't have to worry about traffic. I'll hover convert your old road car into into a skyway flyer! For only $39,999.95, so come on down and see me Goldie Wilson III, at any one of our 29 convenient locations. Remember, keep 'em flying!

Goldie Wilson III

I foresee two possibilities. One, coming face to face with herself 30 years older would put her into shock and she would simply pass out. Or two, the encounter could create a time paradox, the results of which could start a chain reaction that would unravel the very fabric of the space time continuum, and destroy the entire universe! Granted, that's a worse case scenario.

Doc

Doc: They're taking her home, to your future home! We'll arrive shortly thereafter, get her out of there and go back to 1985.
Marty McFly: You mean, I'm going to see where I live? I'm gonna see myself as an old man?
Doc: No, no, no Marty, that could result in a... Great scott! Jennifer could conceivably encounter her future self! The consequences of that could be disastrous!
Marty McFly: Doc, what do you mean?

Doc: However, the destruction may be very localized; limited to merely our own galaxy.
Marty McFly: Well that's a relief.

Biff Tannen: Go ahead, kid! Jump! A suicide will be nice and neat.
Marty McFly: What if I don't?
Biff Tannen: Lead poisoning.

Marty McFly: Cubs win world series against Miami?
Old Terry: Yeah. Who would've thought? 100 to 1 shot! I wish I could go back to the beginning of the season, put some money on the Cubs.
Marty McFly: I just meant Miami ... what did you just say?
Old Terry: I said I wish I could go back to the beginning of the season, put some money on the Cubbies!

Biff Tannen: Where is he?
CPR Kid: Who?
Biff Tannen: Calvin Klein.
CPR Kid: Who?
Biff Tannen: The guy with the hat. Where is he?
CPR Kid: Oh he went that way. I think he took your wallet!
[to camera]
CPR Kid: I think he took his wallet.

Wow! Since when did you become the physical type.

Griff Tannen

Hey, the big M! How's it hanging, McFly?

Needles

Marty McFly: I had a horrible nightmare. It was terrible.
Lorraine Baines: Well, you're safe and sound now. Back on the good old 27th floor.
Marty McFly: 27th floor?

Young Biff: How do you know how to do that? Nobody can start this car but me.
Old Biff: Just get in the car, Tannen. Today's your lucky day.

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