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A very good, clean fighter. Often seen in street fights
John: That was a wicked fight
Ted: YA fosure, the winner was a Dempsey
John: Give me my money bitch
dempsey by Potato Salad October 12, 2007
Dempsey is a surname of Irish origin.

Dempsey is a variant of O'Dempsey, first recorded as Dempse in 1526. It represents the Anglicized form of the Irish gaelic Ó Díomasaigh (male) or Ní Dhíomasaigh (female)
Niamh Ní Dhíomasaigh (Niamh Dempsey)
Seamus Ó Díomasaigh (James Dempsey)
Dempsey by Ms. Ní Dhíomasaigh July 10, 2010
she is the best person to be friends with, you'll wish she's your daughter. she's funny, nice, pretty, caring, loyal and just the best person you'll ever meet. She has an attitude for miles when she doesnt get her way. Sometimes she lives in the imagination in her head and gets very disappointed when reality doesn't match. She is fiercely loyal to those she loves and will never let you down. She has a knack for cooking and all things food. She is creative and artistic with her head in the clouds yet remains grounded.
Wow your definitely Dempsey
Dempsey by Lucky dream catcher September 14, 2019
Zhe absolute ugliest creature I have ever seen! Unt I have seen lots of ugly things! Dempsey (also known as Tank) is a US Marine unt all but he really is just annoying unt gets in my way, Taken and Nikolai are much better assets to zhe Treyarch Zombies Crew.
“Hello Dempsey... ah, it’s just a portrait... AN UGLY ONE!”
Dempsey by TheDoctor935 November 27, 2018
An amazing, funny, handsome person who is almost flawless in every way.
Sarah: oh this Dempsey I was talking to is amazing.
Lucy: yeah I know him he's got such a big cock.
dempsey by Billlynillinson January 19, 2017
A Dempsey is a male or female that pisses after every drink of beer. They have thimble sized bladders and usually squat when they piss
Wow, sorry guys I have to take a Dempsey.
Dempsey by Harry O' Nutz April 19, 2011
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
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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