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1 definition by ScootM

 
1.
The condition when one plays Halo 3 nonstop, night and day, and the rest of the world falls by the wayside, girlfriends disappear, your job disappears etc....
I was in my 40th hour of Halo3itis and took the time to answer the phone and listen to my boss fire me, and my girlfriend kept walking in front of the tv with her boxes she was moving out with.
by ScootM September 28, 2007