Rain Man (1988)

Charlie: He's not crazy, he's not retarded but he's here.
Dr. Bruner: He's an autistic savant. People like him used to be called idiot savants. There's certain deficiencies, certain abilities that impairs him.
Charlie: So he's retarded.
Dr. Bruner: Autistic. There's certain routines, rituals that he follows.
Charlie: Rituals, I like that.
Dr. Bruner: The way he eats, sleeps, walks, talks, uses the bathroom. It's all he has to protect himself. Any break from this routine leaves him terrified.

Raymond: Lights out at eleven.
Charlie: Yeah well new rules.

Charlie: Listen, Ray, our dad died, that means he's not with us anymore. Did they tell you about that?
Raymond: I don't know.
Charlie: You don't know if they told you or you don't know what death is?
Raymond: I don't know.

Charlie: I'm gonna go take a celebration piss.

Doctor: Ray, do you want to stay and live with Charlie?
Raymond: Yeah.
Doctor: Or do you want to go back to Walbrook?
Raymond: Yeah.
Doctor: Which is it? Go back to Walbrook or stay with Charlie Babbitt?
Raymond: Go back to Walbrook, stay with Charlie Babbitt.

Dr. Bruner: Raymond, wouldn't you feel more relaxed in your favorite K-Mart clothes?
Charlie: Tell him, Ray.
Raymond: K-Mart sucks.
Dr. Bruner: Oh, I see.

Doctor: Raymond, do you know what autistic is?
Raymond: Yeah.
Doctor: You know that word?
Raymond: Yeah.
Doctor: Are you autistic?
Raymond: I don't think so. No. Definitely not.

Charlie: What's it going to be Ray? What's it going to be?
Raymond: This is a very dangerous highway.
Charlie: How am I going to get to LA?
Raymond: Course driving your car on this interstate is very dangerous.
Charlie: You want to get off the highway will that make you happy?
Raymond: Yeah.
Charlie: Yeah, well you gotta GET in THE CAR SO that WE CAN GET OFF THE highway.
Raymond: Course in 1986 46,400 male drivers were definitely involved in fatal accidents.

Charlie: Ray, we're at an airport. People fly out of airports. What'd you think we're doing here this whole time?

Charlie: $200 is about to go to the shit house and Lenny doesn't wanna answer the phone.

Charlie: When I was a little kid and I got scared, the Rain Man would come and sing to me.
Susanna: Rain what?
Charlie: Oh you know, one of those imaginary childhood friends.
Susanna: What happened to him?
Charlie: Nothing, I just grew up.
Susanna: Not so much.