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Disappearing Act 

When you dunk your shot on the 18th hole, usually for eagle. The ball just vanishes without a hop and it’s the best feeling
I played a round with Tommy yesterday, he wasn’t playing so good and was getting frustrated but on the 18th hole he pulled a disappearing act and got so excited
Disappearing Act by Daddy Piccolae August 14, 2021

the disappearing act 

what my dad did
Dad: Pumpkin can I show you a trick?!

Kid: YES! YES! YES

Dad: Okay! It's called the disappearing act! Go to bed and look for me tomorrow morning!
*disappears*

Kid: *now has their own family and still can't find their dad*
the disappearing act by youisdank November 27, 2018

Count Fecula's disappearing act 

What happens when you evacuate your bowels and the waste product perfectly snakes it's way down the cicular pipe at the bottom of the toilet and is no where to be found post- wipe pre- flush.
Man I just Witnessed a count Fecula's disappearing act In the bathroom.

Dissappearing Act 

When a girl makes a male's whole penis literally dissappear down her throat.
Damn that crazy chick pulled a dissappearing act on me last night.
Dissappearing Act by Too Blowed March 21, 2004

Dissapearing act 

When you have to bail out of an e-mail or text session with a "friend", because of a prior commitment with a spouse or significant other....usually resulting in the other party thinking you bailed on them.
Dude, what's with the dissapearing act??

Sorry man, the boss had me tied up cuttin the yard for ever.....
Dissapearing act by Fukstiker February 11, 2012
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
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