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car ninja 

A person who displays incredible and/or aggressive driving skills. This may include but is not limited to speeding, cornering, parking, or otherwise steering the vehicle with a swiftness and death defying nature that cause other motorists to cower in fear.

Wearing all black and carring shurikens while driving are not necessary to be a car ninja but they make ya look damn cool...and probably highly arrest-able.
Driver - See that parking space. Bam! I there. That other car in front? ZOOM. Ha! I cut him off like that! I am a car ninja.
Passenger - {meekly} I'd like to get out now.
car ninja by BrownFedora October 25, 2006
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A vehicle that appears out of thin air, completely parallel to your car, the moment you start to change lane.
I tried to change lane, looked in the mirrors and everything, but as soon as I started, a ninja car suddenly WAS there and blocked me. It came from nowhere!
Ninja Car by FDaihatsu August 18, 2010

car-seat ninja 

Children that are under 50 lbs and taking any type of martial arts class.
Damn, do you see all of those car-seat ninjas outside of the dojo yesterday evening?, Cosmo Kramer pwnd a bunch of car-seat ninjas.
car-seat ninja by Byrd-Man April 12, 2009

Super Ninja Monkey Death Car 

ummm a super death car driven by a ninja monkey. Also, a best selling book on News Radio.
I am the dragons testicle feel mt power... Donkey, donkey, donkey Super
Ninja Monkey Death Car.~Mr. James
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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
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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.
Boffin by Agnon February 11, 2023
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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.
Pee Calculus by anorlondo October 1, 2026
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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
Ajumma by aintnotinbutnice July 5, 2009
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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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