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Unassigned Assigned Seat 

A seat in class (most often a college class) that you normally sit in all the time; so much so that it practically belongs to you. More often than not, the majority (or even the entirety) of the class has one because they pretty much always sit in the same seating arrangement every class. However, if the seats are not officially assigned in class by the professor/teacher, someone else could sit in your unassigned assigned seat either without knowing that you normally sit there (perhaps they're new to class or just never noticed), or in rarer cases deliberately, causing you to have to find another seat with discomfort and awkwardness. You feel that you HAVE to sit there every time because that seat is yours.
Someone sat in my Unassigned Assigned Seat in class today, even though they knew I always sit there. I felt so stupid when I had to find another seat to sit in.

unfeigned 

It means genuine feeling or expression that’s not under pretense but rather true, natural and honest
Kunmi’s interest in people is unfeigned
unfeigned by Pbuks November 17, 2019

unsigned short 

Half a natural machine word.
Two unsigned short had sex and multiplied into an unsigned int.
unsigned short by Bad C dev March 2, 2021

unsigned int 

The word size on a computer. Basically the size of the largest number that can be added/subtracted at one time on a processor. In the x86-64, however, an int stayed the same size as in the x86.
x86 has a word size of 32, and x86-64 has unsigned ints with a size of 32 (wtf?)
unsigned int by Bad C dev March 2, 2021

Unsigned Hype

Hype from people(mostly mixtape rappers) that you never heard of.
Bill:"Yo Tom you heard that new Really Real mixtape, that junk go hard in the paint!"

Tom:"Really Real? I ain't never heard of dude in my life. All that unsigned hype."
Unsigned Hype by HTC8103 November 23, 2010

unalived 

It means to kill someone without being bad
Wow you rally just unalived that guy
More from Urban Dictionary
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
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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