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 24, 2007

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Top Definition
To play a computer game, especially an Massive Multiplayer Online (MMO), for extreme lengths of time. This may come at the expense of hygiene, social interaction, even nutrition. Popularized by the article "The Surreal World" by Hayes Reed where he described an Ultima Online obsessed friend's apartment as, "A den of cat ass and murdered time."
Did you hear that Jim was cat assing on WoW for so long, he actually got scurvy from eating nothing but ramen?
by Nelsormensch June 12, 2007

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Verb. 1) Used to describe the homebody behavior of a 'cat person' who stays at home instead of engaging in meaningful social relationships.

2) Also used to describe general lolly-gagging and laying about doing nothing.
Julie won't come hang out tonight because she's too busy cat assing around the house with her clowder of cats.

Julie is unemployed, so all she does is cat ass on the sofa playing video games.
by WeirdK April 15, 2011

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