A character is contemplating about something they should do. They end up thinking of something smart that they should say, or something stupid that they should avoid saying. When it seems like everything will go well, they end up saying something stupid instead. Why the character says something stupid will vary, but the most common reason is for comedy. You can also expect a follow-up monologue of them scolding themselves.
This is a close relative of the Gilligan Cut, and they can easily occur together if the thought comes before the cut and the speech after. Can also overlap with Ignore the Disability, if the character is mentally reminding themself to not mention some awkward topic, only to blurt it out as soon as they open their mouth. May have some relation to Did I Just Say That Out Loud?. Gibberish of Love is a Sub-Trope to this for verbal blackouts caused by a hormone shock. Some instances of I Need to Go Iron My Dog can result from this trope.
- In the Marvel Comics Omega Event crossover, Spider-Man meets up with The Punisher. When he sees that Frank Castle has a female sidekick, Spidey thinks to himself◊ that cracking a joke about it will just piss Frank off—but he can't stop himself from saying it.
Spider-Man's internal monologue: Of course... The Punisher... and he's brought a friend. Who's a girl. Don't say it resist the urge he'll kill you don't don't—Spider-Man: So I see you've started dating again.Spider-Man's internal monologue: Stupid mouth!
- In one The Far Side comic, Tarzan swings through the jungle, rehearsing a number of ways to introduce himself to Jane. Upon actually seeing her, however, his far more eloquent introductions collapse into "Me Tarzan! You Jane!" much to his chagrin.
- The Demesne Of The Reluctant Twilight Sparkle: Twilight's reaction to her "gift".
Twilight (thinking): I'm sorry Celestia, I should really head back to Ponyville and talk to Mayor Mare about this. Please rectify this situation for me, Luna, as soon as equally possible, as well-intentioned as your gift was. I hope you understand that I refuse it humbly, and not out of malice, as being the overlord of your friends tends to be a bit of a faux pas.Twilight: I need to get the buck back to Ponyville and figure this out before they tar my ponyfeathers and lynch me for this!Celestia: Twilight!Twilight: ...I just said the in-my-head thing out loud and the out-loud thing in my head, didn't I?
- In Sword Art Online Abridged, Asuna asks Kirito what they should do next with their relationship. Kirito doesn't have the faintest idea, but he's on the spot and his brain tells him to come up with something. Anything. So long as he says it with confidence. Kirito says 'We should get married'.
- Luca: In what is later revealed to be a Nightmare Sequence, Luca's mother asks him where he's been. He thinks, "Don't say surface, don't say surface..." but then casually blurts out, "Surface."
- Spider-Man: Into the Spider-Verse: Miles, confronted by a security guard about leaving campus without permission, tells himself to play dumb. His verbal reply has him chastising himself for it being too dumb.
Guard: I know you snuck out last night, Morales!
Miles: (thinking) Play dumb. (out loud) Who's Morales? (thinking) Not that dumb!
- Scott Pilgrim vs. The World: Scott, suddenly finding himself having to explain his previous relationship with Knives to Ramona, mentally spins a wheel of responses that enable him to avoid answering, landing between feigning ignorance ("Who, her?") and escaping to the bathroom ("I gotta pee."). The result?
Scott: I gotta pee on her.
- Happens a few times in It's Always Sunny in Philadelphia POV episode, "Being Frank".
Angry Dad: Get out of my face, old man, before I kick your ass and throw you in that trunk.Frank's Inner Monologue: I gotta think of something tough to say.Frank: Nice nips, cupcake.
- Whose Line Is It Anyway?: One "Party Quirks" game has Colin Mochrie practicing clever pick-up lines—and then when he comes face-to-face with Kathy Greenwood, all he can say is "Nice boobs!" and immediately cringe at what he just said.
- In 8-Bit Theater, when Black Mage meets White Mage, the first thing out of his mouth is some Gibberish of Love. He then thinks, "Snap out of it, you fool! The most gorgeous woman in the universe is talking to you! Time to turn on the patented Black Mage charm and make a good first impression." He then says, "I am the Black Mage! I casts the spells that make the peoples fall down!" In an interesting twist, BM doesn't seem to realize how stupid he sounded.
- In El Goonish Shive, The Rant below a sketchbook strip has Dan failing to avoid making a hog heaven joke about the dead boar.
- Drew Gooden: In one video, Drew pokes fun at a YouTube channel with staged To Catch a Predator-style videos. In one, a woman is caught trying to assault a young girl (actually an adult woman playing the role). When it's pointed out that she knew the girl was 14 years old, she quickly claims that she said she was "some other age". Drew laughs at this, imagining what her thought process must've been.
"No, she's not fourteen! She told me she was..." (thinking) "Come on, just say any number that isn't fourteen..." (speaking) "Some other age!"
- Family Guy: At a job interview, Peter is asked where he sees himself in five years.
Peter: (Don't say "doin' your wife". Don't say "doin' your wife". Don't say "doin' your wife".) Doin' your... [glances at boss's family photo of himself, his wife and his son] ...son?
- Phineas and Ferb: When trying to covertly investigate the titular brothers' invention of the day in "Undercover Carl" due to mistakenly thinking it's actually an evil antigravity device, when asked his name, Carl thinks to himself, "Say a cool name, like Nitro Dax or Steel," and then when actually introducing himself, just says "My name... is Carl."
- Robot Chicken: In a Dora the Explorer-themed sketch, Dora is sick of Boots saying he loves everything and asks him if there's anything he doesn't love.
Boots' Brain: Tell her, man! Tell her her hair looks like Javier Bardem in No Country for Old Men! This is your chance, Boots! Don't puss out!Boots: (beat) Nope!Boots' Brain: You pussy...
- The Simpsons: This is a Running Gag with Homer, whose relationship with his own brain is... shall we say, adversarial.
- A classic example from "Brother From The Same Planet".
Big Brothers Employee: And what are your reasons for wanting a little brother?Homer's Brain: Don't say revenge. Don't say revenge.Homer: Uh... revenge.Homer's Brain: That's it, I'm gettin' out of here. [sounds of walking away, followed by a door slamming]
- "Treehouse of Terror VI" segment "Homer Cubed": Homer is awed by the sight of the Third Dimension.
Homer's Brain: O, Glory of Glories. O, heavenly testament to the eternal majesty of God's Creation.Homer: Holy macaroni!
- In "Marge in Chains," Mr. Burns finds Homer sitting in a secret private chamber eating a sandwich. Burns furiously demands to know who he is.
Homer's Brain: Don't panic. Just come up with a good story.
Homer: My name is Mr. Burns.
Homer's Brain: D'OH!
- Even Bart goes through this. In "Teenaged Mutant Milk-caused Hurdles", he has a crush on the new teacher.
Bart's Brain: All right, time to show this naive young veteran what happens when you call on Bart Simpson.Bart: Ma'am, my name is Bart, and I am glad to have you as my teacher.Bart's Brain: What the hell!?
- In the episode "New Kid on the Block" after Bart freaks out Lisa into running away from the basement of the house next door, he's shocked into unconsciousness by someone sneaking up behind him. When he wakes up:
Laura Powers: Hey, kid, wake up.Bart: Who are you?Laura Powers: I'm Laura, your new neighbor. You all right?Bart's Brain: She's beautiful. Say something clever.Bart: I fell on my bottom.Bart's Brain: D'oh!
- In "Simpsorama" (the Crossover with Futurama), Marge is introduced to Leela:
Marge (thinking): Oh, don't mention her eye. Don't mention her eye.
Leela (thinking): Don't mention her hair. Don't mention her hair.
Marge: I (Eye)... am so pleased to meet you.
Leela: Nice to be hair.
- A classic example from "Brother From The Same Planet".
- Total Drama: Tyler asks Lindsay to go on a walk with him. Lindsay thinks to herself "Have to say no. Have to say no." because Heather doesn't want her getting cuddly with anyone on the other team. She ends up saying okay and goes on the walk.