Top Definition
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

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When you can only think of nothing but Halo 3.
Jacob couldn't eat, sleep, or even use the bathroom because of his Halo3itis
by Johnny S.. October 03, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt