Tina and Mia joking around in book 8 about how they're never going to get to third base with the boyfriends.
Tina: Let’s face it, Mia. You and I are going to be the Last Virgins at Albert Einstein High.
Mia: Wow. That sounds like the title of a book.
Tina: You should totally write it!!!! THE LAST VIRGINS.
Mia: Two girls cursed with Israeli-trained bodyguards, paid by their fathers to protect their daughters’ precious gifts...with their lives!
Tina: No man shall know them — UNTIL PROM NIGHT!!!!
How Mia's party ends in book 5:
“I’m home,” Mr. G called, putting the bags down, and starting to take off his windbreaker. “I picked up some ice, too. I figured we might be running out by now…”
Mr. G’s voice trailed off. That’s because he’d opened the hall closet door to put away his coat and found Lilly and Jangbu in there, making out.
Mia finding she keeps using horse metaphors after talking with her cowboy psychologist.
The circumstances of Rocky's birth. All of it.
In book 1 Mia writes the quadratic formula on her sneaker so she can pass a pop quiz in algebra. She worries all night about being caught cheating and tries to wash it off the next morning, fails, tries to change into another pair of shoes but breaks the bootlaces, decides that she'll wear the sneakers anyway and just not peek at the formula but ends up doing so anyway during the test and after all that, still gets all the questions wrong. As she puts it - "I CAN'T EVEN CHEAT RIGHT!"
Before she realised he was a bodyguard, apparently Mia assumed the bulge in Lars' jacket (his gun) was a third arm, only she was always too embarrassed to ask him about it directly, so he never corrected her.
Mia's first algebra lesson after she gets outed as princess being disrupted by the news people outside and students yelling out the windows at the news people: “You killed Princess Di! Bring back Princess Di!”
The list of rules that the consort of the prince/ss of Genovia has to follow includes not being able to interrupt the prince/ss, having to ask their permission to leave the room, not being able to take part in any risk-taking behaviour... Mia points out how unreasonable these expectations are.
I shudder to think of the total loser I will one day be forced to marry. I am already in mourning for the cool race car–driving, mountain-climbing, sky-diving guy I could have had, if it weren’t for this whole crummy princess thing.
Mia telling all about her and Lilly's "fun" with Lilly's stalker Norman, a man with a foot fetish who chased her and Mia around the park a few weeks ago, trying to make them take off their shoes. Mia then finishes off the story by saying that she always has such a good time with Lilly.
When Philippe tries to tell Mia he's a prince in book 1 and she gets the hiccups.
Mia's Lord of the Rings analogy when she tries to explain Michael's motives for going to Japan to her father. Made funnier in that Phillipe is simultaneously trying to deal with Grandmere's complaints about her hotel suite not being up to her (very high) standards.
Philippe eventually books her a suite at another hotel. Grandmere then mentions to Mia that the suite is paid for until the end of the week and will be completely empty - just in case Mia should like to give Michael a "very private and very romantic good-bye." It takes Mia a while to realise what she means.
MY GRANDMOTHER HAS GIVEN ME MY OWN SEX PLACE!!!
Grandmere's remedy for heartbreak: "Bourbon. Does the trick every time."
In A Royal Wedding when Mia's father falls asleep on her couch, she sends a photo of him to Michael. Michael jokingly texts back: "Why have you left me for a middle-aged band teacher? ;-)" Then Mia texts Lilly with news about her half-sister and sends her to picture to explain why she can't come round.
Lilly: Why is there a dentist from Scottsdale, Arizona, sleeping on your couch?
"Tell him to suck your [REDACTED]."
Most of the Rene moments at the beginning of Princess-in-Waiting.
Mia saying that she is not going to do the Lana Weinberger thing of writing "Mrs Josh Richter" in her Algebra notebook. Followed by her writing variations of "Michael Renaldo" repeatedly in her diary.
The whole of Mia trying to be a party girl in book 7. Culminating in her acting ridiculously at Michael's party and leaving in embarrassment.
Films
Meta
Meg Cabot was approached and told that the studio wanted Mia's father deceased in the movie. Confused and slightly hurt, she asked why on Earth they were asking. They explained that they had a big name actress for the role of Grandmere and wanted to make the most of her by combining the roles. Cue this conversation:
Meg: Who did you get? Studio: Julie Andrews. Meg: Oh my god, KILL THE DAD!
When Clarice visits Mia and her mother at home (A converted firehouse) to try and explain the situation further, Mia angrily stomps off to her room.
Clarice: Where is she going? Helen: [Gets up to follow Mia] The tower... Mia, get down here! Clarice: [To herself, sounding envious] She has a tower?!
Charlotte is full of little funny moments in the first movie.
When Clarisse is trying to explain posture to Mia, behind her back Mia is making funny faces. Charlotte keeps laughing and tries to hide it whenever Clarisse looks at her.
When Clarisse explains to Mia that princesses never cross their legs in public, you can see Charlotte discreetly uncross her legs.
Her reaction to Mia's "I want to show you my baby." (Mia is talking about her car.)
A meta example, it is revealed in the directors' commentary that the editor would often cut to Charlotte's reaction during the training scenes as an easy edit to bridge clips from different takes or end a scene. The editor cut away to Charlotte so much that the character was named "Charlotte Kutaway", as seen in the credits.
Clarisse's exaggerated imitation of a teenager's walk is so much funnier just for having Julie Andrews do it.
In return, Mia's interpretation of Clarisse's royal walk, a very flouncy kind of thing.
Whenever Mia steps on the lawn at the embassy, a pre-recorded announcement says "Get off the grass!" - and then yells the same thing in several different languages.
Clarisse and Mia are sitting in a couple of chairs, practicing proper car etiquette, and Joe is sitting in the chair in front of them, pretending to drive. He checks his watch and realizes he has somewhere to be, then pantomimes stopping the car, putting it in park, and removing the keys from the ignition before he gets up to leave.
Mia also puts her Royal Wave skills to good use when she gives Joe a "thank you for being here today."
Mia's dance lessons.
Joe: This is between a waltz and a tango.
Mia: It's a wango?
Heather Matarazzo's delivery of "Has your grandmother turned into the big bad wolf?!"
While Lilly ragging on Mia's makeover is a major Kick the Dog moment for her, Heather Matarazzo's comedic delivery on certain lines is pure gold.
Mia: Does it... really look that bad? Lilly: You look ridiculous. You should sue.
After Mia give herself brain freeze from a huge scoop of Genovian pear sorbet at her first formal state function, the prime minister and his wife follow suit to spare her the embarrassment. The baron snottily tells his wife "They are acting like monkeys." Cue Mia, the prime minister, and his wife making monkey-like hooting.
Car t-bones San Francisco trolley. Nun (yes, a nun) whips out her cell phone, dials 911, gets put on hold, and lets out an exasperated, "Oh, for the love of God!" It must be seen to be believed.
“Goodbye, trolley people!”
"Gupta. Mhm. Mhm. Mhm." *hangs up phone, pauses dramatically* "The Queen is coming. To Grove High School."
Mia shows up to the grand ball in casual clothes from the rain. Lily turns to Jeremiah (the two of them have cleaned up well) and says "Why didn't we dress like her? We look like idiots!"
A journalist from a teen magazine starts to excitedly dictate Mia's outfit to her tape recorder.
At the grand ball the press asks Baron and Baroness von Troken if it's true that they'll rule Genovia, should Mia abdicate the crown, and they say yes. Earlier in the movie (long before the pair are even introduced) Clarisse literally tells Helen that should Mia abdicate, Genovia would "cease to exist." Turns out that Clarisse was actually taking shots at Baron and Baroness's ability to rule the country!
The Baron attempts to steal a vase during the grand ball by slipping it into his coat and walking off. A moment later, Charlotte comes back and returns the vase to its place.
Mia literally giving Lana her "just desserts" by shoving an ice cream cone on her cheerleading uniform (also counts as an awesome moment). Everybody chants "Lana got coned!". Lana whines and tries to get sympathy from Mrs. Gupta by complaining to her about what Mia did. Mrs. Gupta's sarcastic response:
Mrs. Gupta: Oh, no, honey, I'm sorry. I was in a very important meeting. Send it out for dry cleaning.
As a nod to this scene, Disney influencer Sarah Sterling had that scene recreated for Mickey's Halloween Party 2018 at Disneylandby doing just that with a friend of hers (Appropriately dressed as frizzy!Mia and her friend dressed as Lana, with Dole Whip as an ice cream cone substitute). Cue the same reaction.
(Appropriately dressed as frizzy!Mia and her friend dressed as Lana, with Dole Whip as an ice cream cone substitute). Cue the same reaction.