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Maasai jumping-jack 

Named after the Maasai jumping dance performed by the maassai tribe. One's penis is tucked between the thighs and as the person jumps up and down a 'handless wank' is achieved. Usually carried out in frustration after hand functionality is comprimised for extended periods. Quite difficult at first but can be perfected with practice.

The first Maasai jumping-jack was performed by Charley Boorman while filming the long way round through Africa. Charlie was whining about his bitchy little limp wrists one night and Ewan denied him a dutch rudder. So, inspired by the Maasai people he'd seen that day, the Maasai jumping-jack was born.
After that motorbike crash where he broke both his wrists, Paul became a pro at the Maasai jumping-jack.

"If Liam didn't show me how to Maasai jumping-jack myself after I burned my hands, I don't think I could've coped."
Related Words
When one sails a boat by himself. It can be a male or female - but it is always called mansailing. It is synonymous with singlehandling.
Damn! Look at Conner mansail that C22.
mansail by twis May 28, 2009

Marsaili 

A beautiful and attractive girl. She is normally mistreated and not appreciated. Normally has a nice body with a rather large ass.
That girl is called Marsaili, you can tell by the size of her ass.
Marsaili by Hairy Snotter June 18, 2011
A good guy
Massai is cool
massai by TimmyThiccAF May 7, 2018
It is an Assamese curse word
It i s very bad and used to express sudden feelings. Not good but bad
Like
(O maksai, harlu) o maksai, I lost.

It's like o shit tooo
It's meaning is complicated.
As there are variousions, but it normally mean mother's cunt or mother sucker

It's a bad word.

And if someone call u this
U definitely wanna kill him/her.
O maksai, harlu
O maksai, I lost
Maksai I will kill u
Tok marim moi maksai
maksai by Fun Prop February 21, 2020

masai barefoot technology 

Walking, training shoes and boots based on the walking style of the Masai tribes of Africa.
Masai Barefoot Technology. Often associated with forehead carpet burns, damaged Christmas trees, broken CD storage units and in excess of 3 litres of cider.
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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