It's not what it seems, Alice and Max are acting a porn scene, directed by Alice.
Max: Now that I've bought an SUV with a spacious back seat, I need to "break it in" with a girl on the corner. There's one now. God damn, she looks hot. Okay, here we go . . .
Alice: Hey Mister, how about taking me for a ri — OH SHIT, MAX!
Max: ALICE! Holy fuck, my own sister is out here working the streets.
Alice: Please don't tell Mom! You can't tell her I'm doing this.
Max: You're right I can't. If I told her then I'd have to explain that I found you because I was wanting to pick up a hooker to fuck in the back seat of my new SUV. Now, what were you saying about me taking you for a ride?
Alice: What?! No way, you're my brother!
Max: So then I'll get a family discount, right? Get in.
Alice: No, you'll pay double.
Max: Deal. Get in!
Alice: All right.
Alice: Nice SUV, by the way. Where did you get the money to pay for it?
Max: Cheat menu.
Alice: What?
Max: Never mind that. I got enough money to buy happiness and if I buy it from you then you'll have money too. Hey, maybe we can make this a permanent arrangement for our mutual satisfaction.
Alice: Did you buy a dictionary too? All these multisyllabic words.
Max: I'm not as dumb as I look, Alice. Wait, that came out wrong. Who the fuck wrote this script?
Alice: Well, if you're going to fuck me in the back seat, we'll need to find a quiet spot to park.
Max: I know just the place.
(Insert dramatic TV police/courtroom procedural 2 note clanging sound.)
I'd like to continue the story but I don't have G3M and G3F police uniforms to render the cops.