| POLICEMAN : 'Evening, Dr Brown. What's with the wire ?
DOC : Oh, just a little weather experiment.
POLICEMAN : What you got under here ?
DOC : No ! Don't touch that ! Some new, specialized weather-sensing equipment.
POLICEMAN : You got a permit for that ?
DOC : Of course I do. [...] Just a second. Let's see if I can find here. [...] Huh huh ....
POLICEMAN : You aren't going to set anything on fire this time, are you, Doc ?
DOC : Noooo ! [...] Hey, kid. You better pick up your mom and get going.
MARTY : Yeah, right.
DOC : You look a little pale. Are you okay ?
MARTY : I don't know, Doc. [...] I mean .... It's just this whole thing with my mother.
DOC : What what what ? What what ?
MARTY : I just don't know if I can go through with it. Hitting on her ...
DOC : Nobody said anything about hitting her. You'll just take a few liberties with her.
MARTY : That's what I mean. God ! I can't believe I'm going to feel up my own mother. This is the kind of thing that could screw me up permanently. What if I go back to the future and I end up being ... gay.
DOC : Why shouldn't you be happy ?
MARTY : I gotta go pick up my mother ...
DOC : Good.
MARTY : Listen, if things don't work out at the dance tonight and my folks don't get back together, when do you think I'll start to fade out ?
DOC : Beats the shit out of me.
| 
