Grease 2

Whoa whoa, I gotta go...Back to School...AGAIN!

The new kid Michael is a nerd. A hopeless nerd! And furthermore, he's in love with Stephanie, who as a Pink Lady can only go with a T-Bird. Naturally, the solution is to find out what she wants in a man and become it, regardless of cost or effort. But Michael succeeds so wildly he ends up upstaging the T-Birds, impressing the whole school, and becoming so awesome that Stephanie starts to question whether she wouldn't rather just have the normal nerdy guy who keeps helping her with her essays. When Michael finally reveals his true identity, he gets the girl and the acceptance he so craves. Hooray!

Even those who took the original seriously might have trouble with this one. Song topics include plant reproduction (which is really sex), going off to war to become a man (which is really sex), and the moral flexibility of the women one meets at the grocery store (which isn't even disguised). Also features a talent-show act with girls trying to act sexy while dressed as Christmas trees and jack-o'lanterns, and almost every instance of informed or designated anything.

A delightful source of Narm, and considered by many to be So Bad It's Good. This was Michelle Pfieffer's breakout role, but the only other actors you will recognize are Christopher McDonald, Rex Manning as the male lead, Pamela Segall, and the actors who reprised their roles from the first movie.

This provides examples of:

All Girls Want Bad Boys: "Cool Rider". Michelle Pfeiffer's character somehow resists the charms of the sweet British boy, because she's "...lookin' for a dream on a mean machine/ With hell in his eyes/ I want a devil in skin tight leather..."
Badass Biker: What Stephanie wants in a man, therefore Michael aims to become one.
Disney Acid Sequence: The "Turn Back the Hands of Time" number, which takes place when Stephanie apparently spaces out in the middle of the talent show and imagines singing a duet with the spirit of her Mysterious Protector in what we can only take to be Biker Heaven. Except that when Stephanie returns to reality at the end of the number, the audience is applauding and she's won the talent show, leaving us to wonder if they all somehow experienced the whole sequence with her. And, if not, then who was really singing the male part of the duet while she was tripping out?
Forbidden Fruit: Pink Ladies can only go with a T-Bird. Anyone else better not even look.
Franchise Killer: The failure of this prevented further Sequelitis. There were studio plans of having at least three more sequels and a TV series, but they were instantly scrapped after Grease 2 bombed.
Guilty Pleasures: Wholly guilty
Malaproper: Johnny Nogerelli, whose verbal garbling produces gems such as turning "menstruation" into "mentalstration".
Shallow Love Interest: Stephanie
Took a Level In Badass: Michael takes one. Naturally.
You Don't Want to Die A Virgin Do You: Intentionally invoked and set to music, with the song "Let's Do It For Our Country". One of the guys brings his girlfriend down to the bomb shelter, where a confederate sounds the bomb siren to make her think it's The End of the World As We Know It. Cue an incredibly Narmful song where she sings about volunteering for the war, contrasting with his rather less patriotic intentions. Then she realizes the siren has stopped, opens the shelter door, and trips over his friends listening at the door.