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Bestester 

Word made by couples to compliment each other. It’s better than “better” and “best” combined that’s why It’s bestester.
“Beanie,” has anyone ever told you that’s you’re absolute bestester?
Bestester by Hayford Kesse September 17, 2020

Bestesterest 

Somebody who is the best from the better ones of the best of the better ones.
Friend one: I think Nadia is the bestest gymnast of all times.
Friend two: No, she's bestester than that.
Friend three: Indeed, she's the bestesterest.
Bestesterest by Gaboantsa December 3, 2022

master-beta tester 

One who must beta test everything before it comes out.
Scott was in his room all night playing with OSX Leapord. He's such a master-beta tester.
master-beta tester by RGI October 13, 2007

Bestester 

The ultimate compliment you can give when describing someone. Formed from combining bestest and better.
Lindsay is bestester than anyone else
Bestester by WooleyWanka June 29, 2016

bettster 

A really cute guy who goes to my school!!!

also defined as Betts
I will always love bettster!

Beta tester 

Person 1 - What do you do for a living?

Person 2 - I'm a beta tester.
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
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026
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