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Mantuition 

The male version of a females intuition. A feeling/hunch a guy get's about a certain situations.
Dude, that girls totally in to you, trust me, my mantuition says so
Mantuition by ravens2 April 7, 2011

Mancation 

The most ultimate man-only vacation. Usually this trip involves heavy drinking, getting kicked out of something, and nearly dying. At camp sites, everybody who is not a mancationer hates the mancationers, likely because they can not understand the sheer awesomeness that is Mancation.
JD: Hey Big Steve, you going to the Mancation this year? It's going to be awesome!

Big Steve: I don't think so, last time I went I got too drunk and started eating Tums like candy. I shat a rainbow the next day!

JD: What's your point?
Mancation by JDFERNS October 18, 2011

Alphabetical Mutation

A typo, but no ordinary typo.

This typo is something special, a word that will pop up and change your life forever, you may even bring it into your everyday speech. Although if you have any sanity or common sense you probably won't.

Often a word that comes with retarded spelling, but still vaguely understandable with its true meaning. A simple slip of the finger on your keyboard is all it takes, and there you have it... An Alphabetical Mutation.
"I wore my undies twice in a week hahaha"

"you're fairly crazy"

"way to go to crush my hopes and dreams"

"how did i do that? unless your hopes and dreams involved ubdies.."

"ubdies? don't you mean undies"

"ahh yes, that was an Alphabetical Mutation"
Alphabetical Mutation by ErikF September 6, 2012

manstration

When a man is going through his monthlies
"You are a bitch right now - are you on your manstration?"
manstration by Jeremy W September 25, 2005
Word of the Day on August 19, 2009

mansulation 

Slang for excessive body hair on a man. Can also be used in reference to a full beard.
"Figured I could use some mansulation this winter," said Jon, stroking his beard.
mansulation by GzBz October 13, 2011

Mutation theory

Mutation theory states that all albanians are genetically born male and if there’s a female albanian she’s a genetic mutation
Man I met a female alb today... she broke mutation theory
Mutation theory by Serbjon October 22, 2020
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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