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Megagaming is when someone plays online competitive games like it's the dominating factor in life, and usually it is their own. If you happen to beat them, they'll sling insults at you for cheating, using map imbalances, and outside interferences because they cannot grasp the fact that someone can beat them in a game.
That twerp, chem.xZER0-Revolution, is a megagamer.
by Nefilim April 05, 2004

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