...rock and roll.

(Phone rings)

Yo!

Doc: Marty, is that you?

Marty: Hey, hey, Doc, where are you?

Doc: Thank god I found you.

Listen, can you meet me at Twin Pines Mall tonight at 1:15?

I've made a major breakthrough, I'll need your assistance.

Marty: Wait a minute, wait a minute. 1:15 in the morning?

Doc: Yeah.

Marty: Doc, what's going on? Where have you been all week?

Doc: Working.

Marty: Where's Einstein, is he with you?

Doc: Yeah, he's right here.

Marty: You know, Doc, you left your equipment on all week.

Doc: My equipment...

...that reminds me, Marty, you better not hook up to the amplifier. There's a slight possibility for overload.

Marty: Yeah, I'll keep that in mind.

Doc: Good, I'll see you tonight.

Don't forget, now, 1:15 a.m., Twin Pines Mall.

Marty: Right.

Doc: Are those my clocks I hear?

Marty: Yeah...

Uh...

...it's 8:00.

Doc: They're late. My experiment worked. They're all exactly twenty-five minutes slow.

Marty: Wait a minute. Wait a minute, Doc.

Are you telling me that it's 8:25?

Doc: Precisely.

Marty: Damn.

I'm late for school!