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A working day, first day of the work week, where a lot of employees moan about being back at work. Not every Monday is a Moanday however once a handful of your work mates have whinged, complained, or moaned, it is then Moanday.
After listening to Jim, Pam and Bob complain about being 'back to the grind' and 'down in the salt mine', I knew this was going to be a Moanday.
Moanday by parhwy December 16, 2012
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diaz monday 

When you are so tired of work, had an awesome weekend, realize its Monday 7am; you hate your job and your manger, you decide to make up some crazy excuse not to go in.
Hi Honey it's past 9 in the morning don't you have work today? Oh hell NO, I 'm pulling a Diaz Monday!
diaz monday by crazyChris1969 May 16, 2016

Chest Monday 

The internationally recognised day on which to train one's chest. This is the best day of the week.
'Have you got plans this evening?'
'Are you serious?! It's chest Monday.'
Chest Monday by NandosKnight November 11, 2013

Danny Monday

Doing a Danny Monday is when you acquire something perfectly good and totally ruin it almost instantly.

This can be achieved by seizing engines, letting wiring set on fire, painting green, excessive lowering, leaving the bonnet open and driving, not putting coolant hoses on properly, painting red, being bald etc.
'That's a nice car, hope he doesn't Danny Monday it'
Danny Monday by jxc12379564 January 21, 2012

Monday Dreamers 

A hard worker, a visionary, a very dedicated person or a group of people with a dream that are willing to work hard to achieve it. Monday is the most unliked day of the week yet the 'Monday Dreamer's' favourite day as that's when working towards your goals and dreams starts.

Monday dreamers are usually very ambitious, passionate about their aspirations and successful in business.
"I'm a Monday Dreamer"
"He is working so hard to make his business successful, he's such a Monday dreamer"
"Their clothing brand is doing so well! They're such Monday Dreamers."
Monday Dreamers by 5mc2.lab January 3, 2022

monday mouse 

a black eye.
Will looked at Jem thoughtfully. "I seem to have woken up with what they call a Monday mouse," he said, pointing at the bruised skin under his eye. "Any idea where I got it?"
"None."

Milf Monday 

Milf Monday is a National Holliday created by Noah Danenhower, dedicated to giving back to the local Milfs and shit on Mondays. Noah D often spreads awareness for this Holliday on his Tiktok account @itsnoah.d
Dunkin Worker: “Your coffee is actually free today”
Milf in drivethru: “why is that!?”
Dunkin worker: “todays Milf Monday, you qualified!”
Milf Monday by Itsnoah.d January 26, 2022
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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
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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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