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.
by Rupert March 8, 2004
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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.
by Ramsey September 19, 2004
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I'm 50 years old, when I and my friends started smoking as 10,11,12...year olds,we would share one smoke, and we always cursed the guy who would wet the filter, hence the term "catass"

Fuck, Ralph catassed it again
by jay pattison December 1, 2004
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The wasting away of one's social life, in order to, level up there character in an MMORPG (massively mulitplay online role playing game)
Is Nathan coming over to day?

NO, he is to busy catassing.
by Unchosen May 25, 2007
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Sexual pleasure from spraying catnip on your ass and having the cats go at it.
I have no plans other than to catass tonight.
by CR33dz January 25, 2016
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When a cat won't leave you alone.

Can be frustrating when you're trying to do something that requirs concentration.
This constant catassment is making it impossible to write this report!
by Optomist with experience January 2, 2008
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