"It's SHOES, Elphaba. Let GO, already." Considering how dark a moment this is in the middle of...absolutely HILARIOUS!
This line:
Galinda: Now, let's tell each other a secret that we've never told anyone before! Fiyero and I are getting married! Elphaba: He's asked you already? Galinda: (gleefully) Oh, he doesn't know yet!
Fiyero literally (at least in some productions) comes swinging onto the scene, screaming "LET THE GREEN GIRL GO!" It's hilarious, considering how serious the scene is...as is the catfight between Glinda and Elphaba beforehand.
The following exchange between Elphie and Glinda:
Glinda: And what have you accomplished besides flying around on that mangy old thing!? Elpheba: Well we can't all come and go by bubble! Who's idea was that? The Wizard's? Of course! Even if it weren't he'd still take credit for it. Glinda: Well, he's not the only one taking something that doesn't belong to him. Elpheba: Oh ho. Listen, I know that it is difficult for that blissful little blonde brain of yours to comprehend that someone like him could choose someone like me! But it's real, it's happened, and you can wave that ridiculous little wand of yours all you want you can't change it! He doesn't belong to you, he doesn't love you! He loves me!
(Glinda smacks Elpheba) Elpheba:...AHHH HA HA HA HA HA!!! Feel better now? Glinda: Yes I do! Elpheba: Good. (smacks Glinda) So do I!
(Cat Fight ensues, complete with Glinda swinging her wand around like a weapon until the Ozian guards break it up) Glinda: LET ME GO I ALMOST HAD HER!!!
From the song "What Is This Feeling?":
Both: There's been some confusion
Over rooming here at Shiz: Elphaba: But of course, I'll care for Nessa. Galinda: But of course, I'll rise above it. Both: For I know that's how you'd want me to respond.
(Spoken:) Yes
There's been some confusion
For you see, my roommate is-- Galinda: Unusually and exceedingly peculiar and altogether quite impossible to describe-- Elphaba: Blonde.
This little gem:
Fiyero: You think I'm really stupid, don't you? Elphaba: No, not really stupid.
Elphaba's inner snark comes out:
Fiyero: Listen Elphaba, I've been thinking- Elphaba: Yes, I've heard.
