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upstairs bathroom effect 

A phenomenon in which an occupant of an upstairs bathroom is unable to hear what individuals downstairs are yelling up to him.
Marie: (To Kenneth) Darling, your brother is on the telephone!
SILENCE
Matthew: Alas, dear; he is using the upstairs bathroom and is thus unable to hear that which you are attempting to communicate to him. He may as well be deaf. This is a superb example of the so-called upstairs bathroom effect.

upstanding member 

Kat says Tony is a Upstanding Member

The bonus is he is a productive Member

UPStalking 

An individual whom follows package delivery services around during the holiday's seeking out opportunities to steal boxes that are left in front of houses by the driver.
"Dude, me and Bob did a little UPStalking yesterday and nabbed a new PC thanks to the dork who left the box at a vacant house."
UPStalking by Jacob Miller September 6, 2005

nothing upstairs 

ignorant and stupid person, with little intelligence,
little education / schooling
he's a twink with nothing upstairs
nothing upstairs by woefwoef January 12, 2008

living on a farm upstate

Being euthanized.
Buster got sick, he got a disease called 'rabies'. But a nice man came and volunteered to take care of him. He's going to be living on a farm upstate where he can run and play.

Leo upstairs 

The hottest producer out of Vancouver, Canada. Ever!!! ⚡️

soundcloud.com/leoupstairs
instagram.com/leoupstairs/
That dude over there look fly as hell! Yeah he fucks all the hoes like leo upstairs
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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