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When someone sac taps you so hard you bust a nut.
Jeez, Ethan just Upindered me
upinder by NANBANGER69 July 2, 2017

Ununderstandable 

1) Preposterously insane.
It can mean something that is insane beyond someone's wildest imagination, to the point that it becomes contrary to reason or common sense.

2) Something that is really hard to understand, which has to be repeated twice, or thrice before one fully comprehends it. (It can't be over 7 times, otherwise it would be: Unununderstandable.)

3) Something that is unacceptable, and intolerable (esp. by whole societies, or religions.)
1: “Hey, Steve. Why is six afraid of seven?”
“I don't know, Tim McGomnrey. WHY is six afraid of seven?”
“Cuz 7 8 9. Haha..”
“HAHAHA... WAIT... THIS IS UNUNDERSTANDABLE!!”
*****************
2: “And this is why Americans like potatoes.”
“Professor, can you repeat that last part 3 more times?”
*The professor literally repeats it 3 more times*
“It's still ununderstandable, professor!”
“Get the &$@% out you little piece of #%£¥!!”
*****************
3: “I said I wanted a decaf! This is NOT a decaf! This is irregularly ununderstandable on so many levels, you are ALL fired!!”
Ununderstandable by Mr. Padwan. September 30, 2012

All Up Under the Covers Day 

The day after Mother's Day.

Because every Mother's Day deserves a Mother's Night.
"This the perfect plan
For a perfect Mother's Day
They'll have to rename this one
All Up Under the Covers Day."

--Lonely Island

up under 

An alternative to using the grammatically correct word "under".
Person 1: "Where is the cereal?"
Person 2: "Up under the counter".
up under by Grammar for All March 13, 2020

ununderstandable 

un·un·der·stand·a·ble {uhn-uhn-der-stan-duh-buhl}
–adjective
incapable of being understood, failing to be understood correctly.
{derived from that of Michael Scott; see misunderstood}
"Any man who says he totally understands women is a fool, because they are ununderstandable." -Michael Scott
ununderstandable by absofruitly February 10, 2008

ununderstandable 

it's not possible to understand the subject or sentence
That is ununderstandable!
ununderstandable by sunny laurie January 10, 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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