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A term used for trolling anyone named Theon who wishes to escape the unfortunate comparison with the Game of Thrones character, who is notorious for fucking prostitutes and ugly girls, feeling up his sister, and being a general douche.
Troll: "Wait, did you say your name was Theon, like from Game of Thrones?"
Theon: "FUUUUUUUUUUU"
Troll: "Haha how is your sister going, Greyjoy?"
Greyjoy by reasons September 4, 2012
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Greyjoy Employer 

Institution that never hires interns or entry-level staff.

They do not sow the career fields, they only pillage workers who jump ship from other companies that will hire or train people new to the field.
Why are you even applying at that crappy Greyjoy employer? You haven't got a chance unless you come with 10 years' experience and a spreadsheet full of clients.
Greyjoy Employer by wholesum1 November 28, 2016

Theon Greyjoy 

Person1: Look at that guy over there. He has no pp and ballz

Person2: He must be a Theon Greyjoy
Theon Greyjoy by Carl_Johnson September 28, 2023
When a male gets Blue Balls to such an extreme level it could figuratively be compared to the scene from Game Of Thrones when Theon Greyjoy had his man removed with a hot knife after being teased by two very sexy whores.
Dude, I was so close to scoring with that girl from the club, but she Greyjoyed me.Before I could get it in! I thought my balls were going to explode!
Greyjoyed by BeardedTyrant February 10, 2014
A slang for a femboy. And a good name that's better than "femboy"
Man, what the hell are these greyjays?

I love a greyjay in my life.
greyjay by nnitro November 10, 2020

greyboys 

Alien species coming to earth with their nice pets (look for shitweasels")
oh, look this greyboy is having a walk with his shitweasel in the park!
greyboys by Michael Underwood April 30, 2003
ŵ̵̩̈́̑̀̈͒̿͐͊̏̌̇͝͠ ̨͔̫͔̱̇̋͆̀͂̾̓͋̄̋͌̀̂h ̢͕̟̜̭͔̗͇͎̫̺͐͌̈́̾̓͂͌̍͆̔̃̂̀̕̚a ̠̟̙̫̠̣̬̠̖̜̖̫̫̃̿̓̍̓ͅṯ̵̨̡̥̤̹͖̝͉̝͇͕͂̋̚: whos greyjay?
ṅ̴̡̙͖̻͔̗̱̬͓̟͠o ̹͓̾̌̐͒̆̏̄͌͘t̶̟̩̏͆͊̒̈́̾̆̿̍͜͝ ̶̡̧̩̲͕͕̈͗̋̌͊͘͘͝͝g̵̢̛̮̤͕̃̎̈́͝r̶̨͔̞̫̫͖̙̰̒̔̔̎̔͑͘̚͝ĕ̶̼͇̦̬͖̻̯̘̾̍̈́y ̧͔̦̰̰̫̗̟̪̳̉j̶̨̨̙̫̙̞̞̼̈́͛̍͗̓̈́͗̚a̶̭̙̞͋̐͒̈̆̏͒͋̈̏y ̢͍͎̼͓̰̠͇̣͙̈́̌̔̆̎͆͠: gay catboy
GreyJay by zyillistic November 10, 2020
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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.
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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.
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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
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korean word for madam, older woman
Ajumma wait a moment
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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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