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One or more buttocks and/or thighs with cactus spines in it, usually the result of an accident.
He crashed his mountain bike into a patch of cacti and came out with cactass. Because he could not pull them all out on his own, his buddies had to help.
cactass by PedalPusher July 3, 2006
Related Words
Some one who plays a Online game and excludes everything else. Often used to describe when some one has a lot of time to spend in a online game.
Came from a article in a newspaper on Everquest. The player they interviewed played so much Everquest he forgot to change his cats littler box, leading the reported to comment his house smelled like "a cats ass".
Not every one has enough time to catass foir items in Everquest.

That guy is such a catass, he has been at the same spawn for 9 hours straight.
catass by Rupert March 7, 2004
PC Gamer says "Apparently, there's a word in the MMO community called 'catass' to describe someone whose online addiction has caused their domestic and personal hygiene to degenerate to such a degree that their entire house begins to smell like an enormous cat-litter box."
That guy just got City of Heroes and has now gone catass.
catass by Ramsey September 18, 2004

Catassathrolagus 

A disease of unknown origin that affects people usually in the throat. Creates confusion in the thought process and words that are spoken or sentences are not easily understood. This disease is not contagious and there are no pre-cursor symptoms. Can usually be treated with a combination of 2 asprin, 1 viagra and 1 adderrall.
Deb contracted a severe case of catassathrolagus last night while sleeping.
An adjective often used to express disdain for the qualities of something or someone. Also see raggedy.
"I was destroyed at the paintball field because my cackass rental gun kept jamming."
Cackass by JustinBer January 18, 2008

catasstrophy 

after your cat uses the litterbox, and runs away from it, sometimes a few leftovers linger on him and fall in his wake. These are catasstrophies.
I walked into the kitchen only to find a catasstrophy next to the refrigerator.
catasstrophy by ebymel April 3, 2008
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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