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Unknown unknown

These are things that you don't know that you don't know, as opposed to things that you know you don't know. Coined by Donlad Rumsfeld, former US Secretary of Defense.
Boss: Is there anything that will cause this system implementation to fail?
You: That's an unknown unknown!
Unknown unknown by seven852 September 20, 2009

Unknown artist 

junior Grimes, the most unknown and slept on artist in history
Me: *looks up “unknown artist” in dictionary

*finds junior Grimes as the definition/meaning*

Society/internet: EXACTLY!

junior Grimes is the unknown artist

___

an unknown artist is an unheard of yet a highly underrated and slept on public figure or artist that the world lacks the knowledge to learn about or appreciate

Ergo, junior Grimes = unknown artist

Or artist unknown, either way the outcome is the same
Unknown artist by GrungeNgo January 3, 2022

Unknown artist 

junior Grimes (J. Grimes)

Australian-british rapper singer and PI, and loner outcast individual who’s got a freestyle titled “unknown artist” as well
Example:

Junior Grimes is an unknown artist

U
Unknown artist by Morganize November 3, 2021

Unknown artist 

junior Grimes (J. Grimes)

Australian-british rapper singer and PI, and loner outcast individual who’s got a freestyle titled “unknown artist” as well
Junior grimes is an unknown artist
Unknown artist by Postage it October 27, 2021

Captain Unknown 

The act of shitting in a toilet at someone's house and not flushing it. Instead leaving it for the next person to find and wonder who left it.
"I just left a Captain Unknown at Johnny's house. It was Epic"

"I'm going to leave a Captain in every state I drive through when I go on vacation."
Captain Unknown by flawless518 August 4, 2012
“He never goes east cause bare man try spot p like acne“
Unknown p my jiggy g-star want to go get a good ol 39 p drink at uncle rajs
More from Urban Dictionary

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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