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Billfold 

Sonny, can you grab my billfold? I'll give you a dollar for lunch.
Billfold by yodawwgggg September 2, 2010

Puerto Rican billfold

A wad of small bills (1s and 5s) intended to make it look like the carrier has a lot of money.
"Man that guy's got fat stacks"
"Nah it's just a Puerto Rican billfold... dude's broke"

Two-story billfold 

When someones wallet is so full of junk that when they pull it out it resembles a two-story building.
Hey Jon you really should clean your wallet, it's starting to take the form of a two-story billfold.
Two-story billfold by CSells March 19, 2004

Ballfold 

In the fold where the scrotum meets the inner thigh lies a secure place to put contraband (drugs, money, ID, etc...). Similar to a wallet/billfold the scrotum and inner thigh hold items snugly due to the fold or crease.
Can I use your bathroom quick, I need to grab somethin' outta my ballfold.

Damn, did you see how dude was walking; definitely put too much in his ballfold.

Hey, did you have this in your ballfold? It reeks like balls!
Ballfold by SS-Latchkey January 6, 2017

Jewish Bill Fold 

When someone folds their money so that the small bills show, and hide the bigger bills on the inside of the fold.
I use the jewish bill fold so that people think i only have a few dollars.
Jewish Bill Fold by Thetruth59 August 31, 2013

billfolding 

The act of sitting in a chair and nodding in and out of sleep with your upper body going up and down towards table in a bill fold like manner. This is usually caused by being extremely tired and or very high/intoxicated.
Tell your sister to move her plate of spaghetti. Her face is about to go in her food from her billfolding again. Will you please wake up and quit billfolding on the coffee table again please.
billfolding by Wylieguide July 5, 2017
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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