Trivia: When Frenchy and Doody arrive at the National Dance Off, Frenchy asks Doody how does she look, to which Doody replies, "Like a beautiful blonde pineapple." Barry Pearl (Doody) ad-libbed this line.
Trivia: The rest of the cast did not see Olivia Newton-John in her greaser girl outfit until she walked into the scene at the Graduation Carnival. The stunned reactions of the T-Birds are real.
Trivia: Leo's name is never spoken in the movie. It is only mentioned in the end credits.
Trivia: Jeff Conaway (Kenicke) and Olivia Newton-John (Sandy) were brother-in-law and sister-in-law in the early 1980s. Conaway was married to Olivia's sister Rona.
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