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A guy who is seen wearing hats and never spotted without one, to the point where you're not really sure what the rest of the guy's head would look like in the absence of a hat.
Turtle on Entourage is pretty much a hat guy.
hat guy by cunnilingus linguist January 13, 2009

The Hat Guy 

Among the usually loud, outspoken, boisterous, and hardcore fans that attended the now defunct Extreme Championship Wrestling (ECW) federation, stood a middle-to-late-aged man at the front row, "The Hat Guy", who was well-known just for being an even louder, even more outspoken and more boisterous fan than any of his peers. When everyone else was sitting down, he would randomly stand up (on average 30 times during the entire show, (if not more) and bark things at the wrestlers, referees, women, and just about anybody who walked into the wrestling ring.

It seemed like he showed up at nearly every single ECW event.

And since no one knew his name, they identify him as "The Hat Guy"
Wrestling Fan #2: Who's that guy screaming in the front row?
Wrestling Fan #1: Oh that's the hat guy.
Wrestlign Fan#2: What's his name?
Wrestling Fan#1: No one knows. He's just 'the hat guy'.
Wrestling Fan #2: He part of the show?
Wrestling Fan #1: Although it seems like he is, he's not.
a reoccurring character in the web comic xkcd. a self described classhole with an outstanding arrest record. always seen in a black top hat.
person 1: i poked holes in your ramen noodles and condoms.

person 2: Dude, stop fucking pretending to be hat guy!!! You are not a fucking Stick Figure.
hat guy by IIAOPSW March 14, 2009
a guy who walks around school with a hat on and his head down. he thinks he’s in the flaxxies but he isn’t and also he is big botman
girl 1: look it’s hat guy
girl 2: oh yea he’s a fookin bot man
girl 1: he is not even in the flaxxies!!
girl 2: L
hat guy by robocopcarter September 7, 2020
A very cool person who is actually Batman is disguise 🎷🐒
Oh look at hotguy300 over here here he’s so sussy
hotguy300 by Skiddle_balls0 July 26, 2021
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The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
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