Top Definition
its when u just got halo and noticed the the campaign is like a lil longer than gears so u go on online for like 5658 hours till you miss the school bus and realize that the game fuel taste terrible but ur just owing so much u basely just dident care and keep on playing till kidposin owns u and ur relived from ur trance.
guy 1: yo man i have terrible halo3osis and i missed school and that test.

guy 2: o man the test was easy but why did u decide to come in.

guy 1: one word kidposin
by dominic sisti September 28, 2007
5 Words related to halo3osis

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