Definitions by sean*23*

koala 

A person who clings to the couch, gets stoned, and sleeps. Much like a koala who clings to trees, gets high off the eucalyptus leaves, and sleeps most of the day.

Jane: Did you go to the movies with Tom?

Sarah: No, all he does is get baked, plays Call of Duty on his couch, and sleeps!
Jane: What a koala!!

koala by sean*23* December 2, 2010