(Doc's House)
(Instead of living in his small workshop, Doc now lives in a very large house. Marty knocks on the door. As he turns his back, waiting for Doc to answer the door, the door opens a crack and Doc peaks out. When Marty turns Doc slams the door shut.)
Marty: Doc?
(Doc opens the door fully now. He's got some strange contraption on his head. He pulls Marty into the living room.)
Doc: Don't say a word.
Marty: Doc.
Doc: I don't wanna know your name. I don't wanna know anything, anything about you.
Marty: Listen, Doc.
Doc: Quiet.
Marty: Doc, Doc, it's me, Marty.
Doc: Don't tell me anything.
(Doc puts a suction cup on Marty's forehead.)
Marty: Doc, you gotta help…
Doc: Quiet, quiet. I'm gonna read your thoughts. Let's see now, you've come from a great distance?
Marty: Yeah, exactly.
Doc: Don't tell me. Uh, you want me to buy a subscription to the Saturday Evening Post?
Marty: No.
Doc: Not a word, not a word, not a word now. Quiet, uh, donations, you want me to make a donation to the coast guard youth auxiliary?
Marty: (he pulls the suction cup off his forehead) Doc, I'm from the future. I came here in a time machine that you invented. Now, I need your help to get back to the year 1985.
Doc: (grabs Marty's shoulders) My god, do you know what this means? It means that this damn thing doesn't work at all. (takes off the contraption.)
Marty: Doc, you gotta help me. you were the only one who knows how your time machine works.
Doc: Time machine, I haven't invented any time machine.
Marty: Okay, alright, I'll prove it to you. Look at my driver's license, expires 1987. Look at my birthday, for crying out load I haven't even been born yet. And, look at this picture, my brother, my sister, and me. Look at the sweatshirt, Doc, class of 1984.
(Doc takes the picture with a pair of tongs and looks at it.)
Doc: Pretty Mediocre photographic fakery, they cut off your brother's hair.
(He tosses the photo back at Marty.)
Marty: I'm telling the truth, Doc, you gotta believe me.
Doc: So tell me, future boy, who's president of the United States in 1985?
Marty: Ronald Reagan.
Doc: Ronald Reagan? The actor? Then who's vice president, Jerry Lewis? (he grabs some papers and runs outside towards his workshop) I suppose Jane Wymann is the first lady.
Marty: Whoa, wait, Doc.
Doc: And Jack Benny is secretary of the Treasury.
Marty: Look, you gotta listen to me.
Doc: I got enough practical jokes for one evening. Good night, future boy. (he slams the workshop door in Marty's face.)
Marty: No wait, Doc, the bruise, the bruise on your head, I know how that happened, you told me the whole story. You were standing on your toilet and you were hanging a clock, and you fell, and you hit your head on the sink, and that's when you came up with the idea for the flux capacitor, which makes time travel possible.
(Doc swings the door open and looks at Marty with astonishment.)