There are several funny moments during the flashback as Glinda relates Elphaba's childhood:
Elphaba's mother, as soon as Governor Thropp leaves, drops her smile, lets down her hair and undoes her collar to reveal a much less conservative dress.
Mrs. Thropp, in the middle of her tryst, giggles as she sinks off camera, and we return to Glinda saying that "One thing led to another. As it so often does." Cut back to Mrs Thropp as she jerks back into the shot in the middle of a Screaming Birth.
Dulcibear is given the Adaptational Nice Guy treatment referring to Elphaba's skin color as "uncanny" instead of "atrocious." She may not outright see Elphaba as a mutation like Governor Thropp, but she's still shocked!
Once everyone at Elphaba's birth see that she's green, two of the attending nurses grab a bottle of rubbing alcohol and take a swig.
As Glinda prepares to depart Munchkinland in her bubble, a munchkin approaches and asks if it was true that she was friends with the Wicked Witch... and, awkwardly, Glinda has to pop her bubble and ask her to repeat the question.
The student body of Shiz parts like the Red Sea, with comical horrified expressions, when Elphaba makes her entrance.
While Galinda and her friends are whispering about how rude Elphaba was after Galinda offered to help cure her green skin someday, Pfannee can be heard saying, "I don't see color."
After being ignored by Madame Morrible in favor of Elphaba, Glinda quietly announces to her posse that she needed to lie down after the rejection. The two lift her up vertically and quickly take her to get some pastries.
Galinda: Something is very wrong... I didn't get my way.
When Elphaba becomes Galinda's roommate, the latter shows the former her bed... which is a small one hidden behind a clothing rack. And did we mention that Galinda's luggage dominates the entire room?
Unknowingly rubbing salt into the wound is Galinda leaving a little note on Elphaba's bed reading, "It's great".
Galinda: It's great!
By the start of "What Is This Feeling?", while writing letters to their respective parents, Galinda takes to describing her new roommate Elphaba in a flowery prose. Elphaba, on the other hand...
Both: There's been some confusion for you see my roommate is... Galinda: ...unusually and exceedingly peculiar and altogether quite impossible to describe. Elphaba: ...blonde.
Galinda somehow manages to move all of her luggage space over to Elphaba's side of the room while she was sleeping. Elphaba gets up in a huff, angrily holding a parasol over her head.
Elphaba, in retaliation, also somehow manages to pile all of said luggage in another corner sometime after.
Elphaba is able to scare Galinda by shouting "Boo!" as she enters the room with Galinda already inside. Her laugh afterwards is satisfactorily hilarious.
During Dr. Dillamond's lecture on Animals in society, Elphaba answers a question unsolicited causing Pfannee and Shen Shen to get offended and give petty remarks.
Dr. Dillamond: (in regards to Ozians' increased discrimination of Animals) So, when and why did this change? Elphaba: From what I've read, the Great Drought. (Galinda gasps) Pfannee: Okay, excuse me. Shen Shen: Like, raise your hand.
When Elphaba first meets Fiyero, she tells him to leave her alone by telling him to "Get stuffed!" If only she knew how unfortunate those words are going to be...
Elphaba asks Fiyero if he goes around trampling over everyone in his way all the time. His response 'Not all the time. Sometimes I'm asleep.'
Later in the same scene, Elphaba attempts to go into her regular spiel, answering people's most common questions about her, but it goes a little differently with Fiyero.
Elphaba: No, I'm not seasick... Fiyero: Neither am I. Elphaba: ...No, I did not eat grass as a child... Fiyero: Oh, you didn't? I did. Elphaba: ...And yes, I have always been green. Fiyero:And this defensiveness, is that a recent development for you?
The scene where Fiyero first arrives at Shiz, due to how awestruck nearly everyone is at having a handsome and charming prince join them.
Before he asks him to move, Pfannee gives a flirty, "Enroll here often?"
As he arrives, the girls are all swooning and even some of the guys take to twirling their hair at the sight of Fiyero.
Galinda steals a student's book and pretends to peruse its contents, faking disinterest around Fiyero. As she shows the new student around, she awkwardly calls the library the "book place".
In the "Dancing Through Life" sequence, Fiyero has some suave moments that somehow go back to being comical.
He picks up a book a student has and casually tosses it aside, saying that "[schools] teach the wrong lesson". Freeze-Frame Bonus shows it's not even a textbook: it's a bodice ripper with the title Forbidden Corn.
As he steps across some books on the tables, he lays on his side and slides across it, to the delight of the students in front of him.
He gets flirty with the librarian. She initially shushed him for being noisy, only to get immediately charmed by him and pushed away on a book cart.
Fiyero high-fives one of the students on the ladder, and they look at their hand in awe as if they had just touched their idol.
Elphaba sits up and tells Nessarose that she’s going outside to study, annoyed by what’s going on.
Boq offers one of his handkerchiefs to Galinda, dabbing at her forehead. He tells her she can keep it since he has plenty due to crying a lot.
Madame Morrible arrives at the Ozdust dance and gives Galinda a training wand. While Galinda is ecstatic, Morrible is quick to tell her she doesn't expect her to get far.
Just before 'Popular', when Elphaba refuses to tell Galinda her secrets, Galinda throws herself dramatically down on her bed to sulk. What really sells it is that, after a few seconds, she glances up with the dirtiest look on her face, just to check that her sulking is working.
At the start of "Popular", unlike in the soundtrack version/the stage production, she doesn't sing "oh!" after "Little ways to flirt and flounce":
Galinda:[motions to Elphaba's shoes] EW.
I'll show you what shoes to wear, how to fix your hair...
This is followed by Elphaba gasping in offence at Galinda calling her shoes ugly.
One of Ariana Grande's hilarious adlibs during "Popular" went viral at great speed. Grande herself had forgotten that she did it during filming, and subsequently "scared [herself]" listening back to the take in the studio.
Galinda: (motioning to a history book about Oz's political leaders) Did they have brains or knowledge?
Elphaba: Well, actually—
Galinda: Don't make me laugh. They were—
Elphaba: Popular!
Galinda: (gasps, then slams the book down very emphatically) RIGHT!
Galinda attempts to use her practice wand to turn Elphaba's nightgown (which she first calls a frock/coat, before combining it into "froat") into a ballgown. Cue a montage of her making different poses and noises that accomplish nothing. Elphaba looks at her new friend in very genuine concern.
Elphaba: Do you need my help? Galinda: (throws her wand in frustration) No! Just wear the froat, it's pretty!
Galinda showing Elphaba how to toss her hair complete with her actually saying the sound effect out loud.
After saving the lion cub, Elphaba points out to Fiyero that he didn't have to help her with it, but chose to come along, and that he's not as self-absorbed and shallow as he likes to pretend he is. Fiyero objects:
Fiyero: Oh, there's no pretense. I happen to be very self-absorbed and deeply shallow.
Galinda complains that Fiyero has started to act different and that he's been "thinking". Elphaba gives her a look of feigned concern.
Fiyero: I've been thinking lately. Elphaba:So I've heard.
Galinda announces she will change her name to "Glinda" in solidarity with Doctor Dillamond, receiving a round of applause from the Shiz students. Fiyero and Elphaba exchange glances, both looking a bit embarrassed at the display.
The two both ask her from behind if she's sure. Instead of simply nodding, she flips her hair with an overdramatic sideways turn while saying "Yes". Twice.
When they meet the Wizard and introduce themselves, Glinda says her name, and then quietly adds that the "Ga" is silent. The Wizard then proceeds to misname her as "Belinda" immediately seconds later.
As Elphaba takes the train to see the Wonderful Wizard of Oz, she tries to persuade Glinda to jump aboard. It succeeds more quickly than expected.
Elphaba: Come with me. Glinda: Where? Elphaba: To meet the Wizard. Glinda: I couldn't possibly. This is your moment! I'm coming.
When Glinda attempts to sing along to the Wiz-O-Mania show by showing off her high note, one of the superstars (played by original Broadway GlindaKristin Chenoweth) covers Glinda's mouth in a diva-ish way.
During the Wiz-o-Mania sequence, the two superstars (played by Chenoweth and original Broadway Elphaba Idina Menzel) do some Muppet-style upstaging of each other; no doubt a loving nod to the rumors of the pair's offstage rivalry and Elphaba and Glinda's dynamic.
Just like Glinda struggling with using her wand to give Elphaba a ballgown, Chenoweth's character struggles in getting her wand to light up and has to bonk it on Menzel's character's wand.
Upon Elphaba and Glinda entering the Wizard's chamber, he gives them the traditional "Oz, The Great and Terrible" effects show, with a gigantic and terrifying face emerging from a curtain. Elphaba freaks out and tries to make a run for it, but Glinda stops her. Elphaba eventually gets the courage to introduce herself... and the booming voice goes away as we hear regular old Jeff Goldblum say "Wait, Elphaba, is that you? Hang on a second." He powers down the giant face and casually walks out from behind the curtain, saying that he can't really see faces clearly from back there.
Bear in mind, Elphaba is green.
During the struggle to escape on the Wizard's balloon, Glinda repeatedly tells one of the guards who has grabbed onto her ankle, "Give me my leg!" The kicker though is that she does so in the most polite yet annoyed tone possible, very dissonant from the chaos at hand.