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pop a collar 

When a male is masturbating and another moves up unbeknownst to the masturbator and then strikes the testicles at such a time that the masturbator is just beginning to ejaculate.

The side-effects may include vomitting, depression, and penis explosion, which can in turn lead to death.
I have always wanted to pop a collar because everyone always masturbates at my house for some reason and I'm getting sick of it.

Yesterday i walked in on Theo masturbating and I popped his collar. Good thing he was already at the toilet because he threw up all over the place.
pop a collar by papa smurf 44 February 27, 2009

pop a colla 

to flick your collar in a fashionable way
Save a cherry, pop a collar.
pop a colla by D.O May 5, 2008

pop a colla 

When you pull off a successful maneuver. It doesn't matter what the maneuver is relevant to as long as you succeed.
Dunk on someone on the court: "Yo, you just got pop a colla!"

Go home with a lady at the end of the night, the next day you may say something like this: "Yeah son, I went home with that bitty and I pop a colla! ya heard!

Find a dollar bill on the side walk you might say: "Oh snap, pop a colla!"
pop a colla by MC Profane February 4, 2010
More from Urban Dictionary
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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