Lorraine: That's Calvin Klein, oh my God, he's a dream.
Outside the Cafe, Marty spots two boys on home made scooters. They can be described as skateboards with crates on them acting as handlebars.
Marty: Whoa, whoa, kid, kid, stop, stop, stop, stop.
Marty lifts one of the boys off his skateboard
Boy on Skateboard: Hey!
Marty: Look, I'll get it back to you, all right?
Boy on Skateboard: You broke it!
Marty has broken the handlebars off, leaving him with a skateboard. Biff and his gang run out of the Cafe. Marty starts to use his skateboard. People watching are amazed.
Boy on Skateboard: Wow, look at him go!
Cut to Biff.
Biff: Let's get him!
Biff and his gang head to their car. Biff and 3-D sit in the front, Match and Skinhead in the back. Marty meanwhile has grabbed the back of a passing truck. Cut to the Cafe. Lorraine, George and the others are watching the whole thing.
Girl in Cafe: What's that thing he's on?
Boy in Cafe: It's a board with wheels!
Lorraine: He's an absolute dream.
Cut back to Biff.
3-D: Come on, come on, come on, come on!
The car drives off, flattening part of the hedge as it catches up with Marty. It is now almost touching Marty. Marty looks ahead. A car door is opening! Letting go of the truck, he swerves to avoid it.
Marty: Argh!
Marty jumps over a hedge with the skateboard.
Marty: Whoa!
Marty bumps into a man and woman exiting the Courthouse, they all fall over. Marty gets up as Biff's car follows him. Marty grabs the front of the car and is being pushed by it. Match and Skinhead are throwing stuff at him.
Biff: I'm gonna ram him.
They're heading towards a manure truck, but only Marty sees this. He gets off the skateboard. The car drives over it, but Marty runs through the car and lands safely back on the skateboard. Biff and his gang are looking at him, they turn around and see the truck.
Biff, Match, 3-D, Skinhead: Shit!
They're right - it's a manure truck! Biff swerves but still hits it, and both car and passengers are covered with manure. Several people from the Cafe run over, including Goldie Wilson.
Goldie: Hoo!
Marty takes the skateboard back to the kid.
Marty: Thanks a lot, kid.
Cut to Biff.
Biff: I'm gonna get that son of a bitch!
Cut to Lorraine and her friends. During the following, George quietly leaves.
Lorraine's Friend 1: Where does he come from?
Lorraine's Friend 2: Yeah, where does he live?
Lorraine: I don't know, but I'm gonna find out.
Cu to Doc's lab. Doc is watching the video from 1985.
1985 Doc: (on video) My God, they found me. I don't know how but they found me. Run for it, Marty!
He rewinds the tape.
1985 Doc: (on video) My God, they found me. I don't know how but they found me. Run for it, Marty!
Marty enters.
Marty: Doc.
Doc: Oh, hi, Marty. I didn't hear you come in. Fascinating device, this video unit.
This reminds Marty of that night.
Marty: Listen, Doc, you know there's something I haven't told you about the night we made that tape.
Doc: Please, Marty, don't tell me, no man should know too much about their own destiny.
Marty: You don't understand.
Doc: I do understand. If I know too much about my own future I could endanger my own existence, just as you endangered yours.
Marty: (reluctantly) You're, you're right.
Doc: Let me show you my plan for sending you home.