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An insane dude. Someone who is out of his god damn mind. A guy that did something that nobody would have ever even dared to think of doing.
Wow Jacob just drank that entire glass of water, what a fucking mad lad.
mad lad by eaozimso February 20, 2017
An absolute unit or uncontainable beast of destruction that will never stop pushing down walls of pure power and death to make the world a better place.
1: Josh took a shit on Ms. B’s corvette!
2: LMAO what a mad lad!
Mad Lad by MadLad001 August 6, 2018
The mad lad! He's actually done it!
mad lad by ohididntnotice February 12, 2019
A Mad lad is somebody who does something extreme, like trying to get inside jokes into the urban dictionary.
U/Wanja01, a mad lad, tries to get himself into the urban dictionary and also reddit.
mad lad by u/Wanja01 August 25, 2019
someone who usually breaks the law and doesn't care about what people say.
Mad Lad- Vapes in kids face

Officer- stop before i arrest you
Mad Lad- no u
Mad Lad by FarJimmyD1500 August 19, 2018
its just an absolute sick cunt that can do literally anything no questions asked. he or she is also usually a nice cunt (don't fuck with a mad lad)
person1: oh who's he/she
person2: ill tell ya
person1: well who is he/she
person2: he/she is a Mad Lad
Mad Lad by pedo fam69 June 23, 2019
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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