Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Hugh Macmaster 

Hugh MacMaster has a penis so large, he has to use a custom made condom. when entering other countries he has to declare his penis as a weapon of mass destruction, currently enlisted in the army his penis is regarded as a nuclear bomb as when he spurts semen entire cities can be leveled by the sheer torrent of the semen.
Al Queada runs at the sheer terror caused by the massive shlong of Hugh Macmaster
Hugh Macmaster by BBC123456789 October 26, 2020

Hashmaster

To be a ganja warrior of sorts, and to smoke enough marijuana that you cannot feel any limbs on your body.
I think I'm a Hashmaster, I can't feel my legs dude...
Hashmaster by Potsmokery October 6, 2011

macmaster 

One Major Pimp Daddy.
The "Macmaster"
I wish I had skills like the Macmaster.
macmaster by Dennis April 17, 2005

MechMaster621 

Imbecile child who thinks it is funny to add lewd definitions of people he has distaste towards, and is then too chickenshit to name himself as the source, so he/she cites other persons.
Stop being a MechMaster621, it's embarrassing everybody in the room. *blushes*
MechMaster621 by R4wk3R April 7, 2005

Hugh Macmaster 

His Dad is a pilot, he knows how to fly a plane up a woman. Let's just say he got it from his Dad...
Hugh Macmaster flew that shit up there
Hugh Macmaster by Hugh Macmaster October 26, 2020

macmaster 

a gentleman, pimp, and/or governer who provides, encourages, and/or illicits sexual gratification and guidance to women/men of less than acceptable proportions/lengths.
That macmaster needs to stop looking at mens asses.
macmaster by bob December 20, 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
Load more