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ludicrous tomfoolery or delectable sweets? 

This is what British mfs named "Sir Bumble Nockntooten IV" expect you to say on Halloween rather than, "Trick or treat?"
The story of Sir Bumble Nockentooten IV's expectation for children to say "ludicrous tomfoolery or delectable sweets?"

Me: *Knocks on Sir Bumble Nockentooten IV's door*
Sir Bumble Nockentooten IV: *Opens door*
Me: "Trick or treat?!"
Sir Bumble Nockentooten IV: *Closes door in anger and pure frustration and starts to cry*

Did you see that ludicrous display last night? 

Something non-football fans say to football fans to fit in. Taken from The IT Crowd.
Moss:
Did you see that ludicrous display last night?

Postman:
What was Wenger thinking sending Walcott on that early?

Moss:
The thing about Arsenal is, they always try to walk it in!

Postman:
Yeah it is true. See you later, Moss

Moss:
Mind 'ow you go.

ludicrous speed

The fastest speed imaginable...light speed is too slow! It is extremely dangerous to go to ludicrous speed. It may result in you going to plaid. Also, going from ludicrous speed to a dead stop will result in you being launched across your ship, flying straight into a wall.
Prepare ship...prepare ship...for LUDICROUS SPEED!!!!

Ludicrous Speed

A phrase taken from the Mel Brooks movie Spaceballs, refers to anything happening or moving at an exceptional rate.
My computer bluescreened the night before my paper was due, so I had to retype it at ludicrous speed that morning.

I had to drive at ludicrous speed to get to work on time after I lost my keys.
Ludicrous Speed by South Illinois December 29, 2010
"That mango was lulicious!"
lulicious by el smith April 28, 2010

Ludicrous Kill 

*7 kills in Unreal Tournament without respawn.

*In reallife when you kill 7 people in a killing spree
-in the same area (a park for example) within 3 minutes.

if it takes more its called an extended Ludicrous Kill (till 10 minutes) after that limit it is simply a kill you made.
Crazyspreekiller21: *BOOm* *click*click Yeah Ludicrous Kill biatch!
Ludicrous Kill by Evildence January 13, 2009
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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