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jackfest 

A party of one or more featuring multiple and prolonged bouts of self-pleasure.
Where is Jeff?
He's at home, probably having a Jackfest.
jackfest by Tom Cioccone February 22, 2011

jackedness 

the degree that a person is jacked (muscular).
Guy: she likes me because of my jackedness
jackedness by Thor9999 January 16, 2011

jackfest 

1. A situation where way too many people are doing nothing and getting in the way and there is a lot of waiting around.

2. A situation where everyone is raining praise on eachother.
1. The DMV is a total jackfest.

2. The board meating was a total jackfest
jackfest by hititlong January 4, 2006

Jackdesh 

1) The action of beating the living soul out of someone in a gruesome style as in the movie "The Job" & "Bourne Ultimatum"

2) The statement used when a person is going to do something genuinely badass and that relates to something Jack Desh would do or has done.

(Also used as Jeckdesh-it or Jackdesh-ing)
1. (Action)
Jim - Hey yo, if you dont stop messing with me, I'm going to jackdesh you.
Bully - WTF?
(Jim Beats the living fuck out of him)
Jackdesh by Jack Desh January 24, 2009

Jackcest 

When a local thot by the name of Jack feels sexual desire for himself so he stickes his own peen in his bum and repopulated the ocean
Dude, did you see that jack over there?! He was totally gonna do some jackcest tonight
Jackcest by Absolutely_stupid January 14, 2019

Jackadextrious 

When a person is trained to masturbate efficiently with both hands. Basically being ambidextrious while jacking off.
Guy1: "I usually jack off with my left hand."
Guy2: "Im more of a righty."
Guy3: "Im Jackadextrious."
Jackadextrious by Fishy987 December 20, 2010
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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