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Multinesia 

Popular name for Indonesia in online game e-sim . Most of players use this name for Indonesia because they are masters of creating multi accounts which administrators can't ban.
Random player 1: I just can't make enough gold
Random player 2: Why don't you invite your "brothers" and "sisters" to play?
Random player 1: Hey man I'm not pro from Multinesia I will get ban for doing that
Multinesia by IndoMan February 12, 2013

Muttness 

Muttness Records - Independent Miami record label founded in 2007, part of Muttness Music Inc., a publishing/licensing company and production house.
OMG, that song is dope, who released it?
It's on the Muttness catalog, they have some killer tracks...
Muttness by McWired March 4, 2009

Muttness 

...from mutt. Involving or suggesting a person's mixed origins. Could apply to race or culture.
I was raised all over the world, and I love my Muttness.

I'm half Latin, 1/4 Jewish, and 1/4 Chinese, now that's Muttness...
Muttness by McWired March 4, 2009

Muppiness 

It's a funny way to say my penis.
Person 1. Hey man what you got to eat around here?
Person 2. I got some fresh mupiness.
Person 1. Muppiness, what's that?
Person 2. It's my penis.
Muppiness by Whiskered Rose January 11, 2022

Muteness of the Eyes 

Another certified definition of someone diagnosed with blindness.
Jerry has Muteness of the Eyes.

muffinesque 

Similar to a muffin. Muffin like. Strongly having to do with Muffins.
The texture of this pizza dough is muffinesque
muffinesque by Muffin Boy June 29, 2004
More from Urban Dictionary
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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