Exactly What It Says on the Tin, an index for tropes, pertaining with just about any form of immaturity.
Contrast Maturity Tropes.
Tropes:
- Affection-Hating Kid; A child character always complains and reacts in disgust when they see older people expressing their love for each other.
- Age-Stereotypical Food: Immaturity indicated by eating "childish" foods.
- All Take and No Give: Immaturity demonstrated by always demanding stuff and never giving anyone anything in return.
- Alpha Bitch: The leader of the cheerleader team who bullies social outcasts.
- And Call Him "George"!: You're not mature enough to express your effection to others, so you would rather smother people to death.
- Annoying Younger Sibling: Your younger sibling is immature.
- Are We There Yet?: Persistently questioning if the driver has reached their destination, often in an antagonizing matter.
- Attention Deficit... Ooh, Shiny!: You're easily distracted by something.
- Attention Whore: You desperately seek attention.
- Beta Bitch: The Alpha Bitch's Dragon.
- Big Brother Bully: Your older sibling bullies you.
- Big, Stupid Doodoo-Head: Character makes childish insults.
- Blinded by Rage: You make bad decisions based on your unstable emotions.
- Blowing a Raspberry: Phhhbbtt!
- Brats with Slingshots: Bratty children in fiction are given slingshots as weapons.
- Bratty Food Demand: Ordering food from another person, usually a parent or a food service worker, in an obnoxious and/or threatening fashion.
- Bratty Half-Pint: A child who acts whiny, self-centered, and demanding.
- Bratty Teenage Daughter: Your teenage daughter is immature and self-centered.
- Breath-Holding Brat: Someone holds their breath until their demands are met.
- The Bully: Picking on others to mask your insecurities or out of boredom.
- Can't Take Criticism: You're not mature enough to handle criticism well.
- Carload of Cool Kids: A car with the windows down passes by and the students inside make harassing remarks to passerbys or their less fortunate schoolmates.
- Childish Older Sibling: Your older sibling is immature.
- Childish Pillow Fight: A sleepover tradition is a group of two or more people playfully hitting each other with pillows.
- Children Are Innocent: Children are unaffected by the world's cruelty.
- Chuunibyou: Coolness is rooted in loner reputation and awkward middle school experience.
- Circus Brat: A temperamental circus kid.
- Class Clown: The eccentric kid in class who seeks attention, typically not taking school seriously.
- Companion Cube: Treating inanimate objects like real people.
- Crocodile Tears: Fake-crying to toy with others' emotions.
- Desk Sweep of Rage: Sweeping everything off your desk in a fit of rage.
- Disability as an Excuse for Jerkassery: "I'm disabled so I can behave however the fuck I want!"
- Disrupting The Theater: Misbehaving in a theater to the chagrin of the other moviegoers.
- Don't You Dare Pity Me!: Immediately brushing off any sympathy you may receive in response to experiencing a tragedy.
- Drama Queen: Making a big deal out of minor mishaps.
- Dude, Not Funny!: Someone thinks it's okay to joke around in inappropriate situations.
- Dumbass Teenage Son: An absent-minded teenage boy.
- Egging: A prank done to property at which one throws eggs.
- Emotional Regression: Reverting back to an immature emotional state.
- Enfant Terrible: A child who is evil.
- Entitled Bastard: Expecting the same person you insulted and bullied to save you when you're in trouble.
- Evil Is Petty: The villain will do cruel things over insignificant slights just because they can.
- Experience Entitlement, ironically enough. People will often try to justify their immature behavior based on horrible experience.
- Extreme Doormat: You're too immature to stop letting people walk over you.
- Face Doodling: Drawing on a person's face is considered immature.
- Flipping the Table: Throwing your desk across the room in a fit of rage.
- Food Fight: A fight performed by pelting food at each other.
- Freudian Excuse, especially when the person using it attempts to justify their unprovoked actions with one.
- The Gadfly: Provoking others for fun.
- Gang of Bullies: A gang consisting of bullies.
- Genki Girl: A female character who is extremely cheerful and energetic.
- Girls Have Cooties: Boys refuse to hang around girls on account of them possessing a "virus".
- Glasses Curiosity: Needing or wanting to wear the glasses of others.
- Goo Goo Godlike: An all-powerful child who doesn't know any better.
- Gosh Dang It to Heck!: Being too innocent to use swear words.
- Growing Up Sucks: Children who believe that growing older is no fun because of the things they could do as children that they won't be allowed to do anymore.
- Hair-Trigger Temper: You're not mature enough to control your temper.
- Heh Heh, You Said "X": Laughing at an Accidental Innuendo or inappropriate word in one's speech.
- Hormone-Addled Teenager: A teenager who is impulsed by their perverted thoughts.
- Imaginary Friend: Treating a figment of your imagination as your friend.
- Immortal Immaturity: Being immortal doesn't stop you from behaving like a child.
- The Ingenue: A woman who is sweet and naive accidentally causes trouble and inconvenience for others.
- I Want My Mommy!: Desperately longing for your mother when you're in an undesirable situation.
- Jabba Table Manners: Eating like a pig.
- Jerk Jock: A jock immaturely expresses his insecurities by bullying people.
- Keet: An overly energetic and cheerful male character.
- Kiddie Kid: A child character acts younger than their stated age.
- Kids Are Cruel: Kids are not only immature, but also cruel, insensitive, and sociopathic.
- Kids Hate Grownups' Conversations: Children reject involvement in adult-held conversations.
- Lack of Empathy: You are not mature enough to care about other people's suffering and misfortunes.
- Little Miss Snarker: A little girl delivers sarcasm.
- Manchild: An adult character who behaves like a child.
- Manipulative Bastard: Using manipulation to get your way.
- Men Are Childish: Men are called out on their childish behavior by women, their wives in particular.
- Military Brat: A character whose experience with the military contributes to their immaturity.
- Minor with Fake I.D.: A minor presents a fake ID to be granted permission into an adults-only place.
- Mocking Sing-Song: Teasing someone in a sing-song voice, typically about their crushes.
- Mr. Imagination: Someone who pursues ideals, especially unrealistically, using their own imagination.
- Mustache Vandalism: Defacing portraits by drawing childish facial hair on them.
- My Beloved Smother: A mother who refused to give her son the space he need to grow as a person.
- Naïve Newcomer: Newcomers are typically inexperienced and have trouble fitting in.
- Narcissist: You think so highly of yourself that it often leads you to disregard others.
- Never Grew Up: A character who is unable to grow up.
- Never My Fault: You blame others for your actions instead of taking responsibility for them.
- Not Good with Rejection: You're not mature enough to handle rejection.
- Not So Above It All: A mature character partakes in immature behavior.
- One of the Kids: An adult hangs out with children to signify their immaturity.
- Outhumbling Each Other: Romantic bickering.
- Parenting the Husband: A wife takes care of her immature husband.
- Ping-Pong Naïveté: Someone who should know better from past experiences, but doesn't.
- Playing the Victim Card: Victimizing yourself in a quandary to get out of responsibility, often to get the real victim in trouble instead.
- Prank Call: Messing with a company or person via a phone call.
- The Prankster: Someone who lives to pull pranks on others.
- Psychological Projection: A character who unwittingly projects their own negative traits onto another.
- Psychopathic Manchild: An unstable adult character who possesses a childlike demeanor.
- Puppy-Dog Eyes: Using your cute eyes to get your way.
- Rage Quit: Quitting a game in a fit of rage.
- Royal Brat: A spoiled rich kid (or young adult) misuses their power of royalty.
- Sarcasm-Blind: You're too oblivious to realize someone said something sarcastic to you.
- Skewed Priorities: You're immature if you care about minor things more than important events.
- Skilled, but Naïve: A full-fledged badass when he sets his mind to it, but a Naïve Newcomer by default.
- Smitten Teenage Girl: A teenage girl with an obsessive and nonsensical crush on a certain guy.
- The Sociopath
- Sore Loser: Whining and complaining when you don't win a competition.
- Spoiled Brat: Characters (and not just kids, but adults as well) who are arrogant, selfish, and entitled.
- Still Sucks Thumb: A character sucks his thumb despite being too old for it.
- The Stool Pigeon: You're a tattletale.
- Stop Copying Me: An immature way to go about being imitated.
- Stupid Good: Being good to others even to a naive degree.
- Super Gullible: So oblivious that you go along with whatever you're told.
- Tantrum Throwing: Things don't go your way? Throw random things around.
- Toilet Humor: Jokes about bodily functions.
- Toilet Paper Prank: Throwing toilet paper on one's property, typically known as TPing.
- The Unapologetic: You're immature because you don't apologize for your actions.
- Ungrateful Bastard: You never thank anyone.
- Valley Girl: A teenage girl stereotype with a very naïve demeanor.
- Wangst: Endlessly complaining about minor things makes you immature.
- Wild Card Excuse: Using the same excuse over and over again.
- Wild Child: A feral child with the mannerisms of an animal.
- Your Mom: Making jokes about another's mother is a common trait of immaturity.
