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A large red M&M who has an on and off relationship with Coffin Joe, drummer out of the horrors.
"That Mr. M&M, he did me over!" - As said by Coffin Joe.
Mr. M&M by AbigHor April 19, 2010
Related Words
A guys who is not a great thinker, one who's says something then immediately goes back on what he just said.

A douchebag.

Someone who doesn't know what he's talking about
Man that guy is such a Mr.M
Mr.M by Jhonny tell all August 28, 2011

Mr. C. M. Cockblock 

defining a cockblocker with a pseudonym when not able to directly state said cockblocker's name.

Very useful when the cockblocker is in close vicinity of you and/or partner. Also very useful as a label to said cockblocker
Girl: What's wrong baby?
Boy: I don't want to say right now ok?
Girl's Dad: Are you sure son? You do seem a little tense and uptight

Sinister look in Dad's eyes
Boy: Well, i would be more relaxed, but once again Mr. C. M. Cockblock strikes again (winks at girlfriend without Dad noticing)
Girl's Dad: Laugh out loud (he's too douchey to write lol)
i hope MR M wont ram me with a semi truck
A swedish gay guy that likes shooting stuff. And he likes becky_wecky very much. He always wears a hat. And plays the VR game called bigscreen
Guys 1: who is that looking gay playing the Vr.
Guy 2: his name is probably Mr_M
Mr_M by TheMan over all men August 4, 2022
Junior the egomaniac (mistah J, junior the forbidden one, real life joker, etc)

Another way of pronouncing “mistah J” the title of junior the deadly street kid who’s mysterious nature gives him the suspicious vibes of criminally versatile albeit innocent looking.

Junior is everything yet none of it, and can be a fantastic mentor but there’s always something in return that he desires (usually)

Mr J is the real life joker boy
Mr J is a terror created by society but takes advantage of his American freedom and mental illness to exploit the corruption of society and its failed leaders

___

Mr J wants to trade his death for your life. No one can kill him for he was born dead. Wisest words ever muttered by possibly J himself

_____

Mr J aka “junior Grimes”
Mr J by Misfired December 12, 2021
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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