Sandy: No, Danny!
Danny: Sandy, don't worry about it, nobody's watching.
Sandy: Danny, get off me!
Danny: Come on, Sandy, what's the matter with you? I thought I meant something to you!
Sandy: Meant something to you! You think I'm going to stay here with you in this? this sin wagon? You can take this piece of tin!
Danny: Sandy, you just can't walk out of a drive-in!
Danny: That's cool baby, you know how it is, rockin' and rollin' and what not.
Sandy: Danny?
Danny: That's my name, don't wear it out.
Sandy: What's the matter with you?
Danny: What's the matter with me, baby, what's the matter with you?
Sandy: What happened to the Danny Zuko I met at the beach?
Danny: Well I do not know. Maybe there's two of us. Why don't you take out a missing person's ad? Or try the yellow pages, I don't know.
Sandy: You're a fake and a phony and I wish I never laid eyes on you!
Answer: It is implied that Danny and Rizzo had a previous romantic relationship of some kind. When Jan says, "Did you guys get a look at Zuk this Morning? Looking pretty good this year, huh, Rizz?" Rizzo replies, "that's ancient history." Later, when Danny says, "you're looking good, Rizz, " her answer, "eat your heart out," also suggests some possible residual feelings on her part. I think that's why Rizzo enjoys tormenting Sandy and Danny by reintroducing them at Rydell at a moment that she knows Danny is going to save face around his friends.
Michael Albert