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The (extreme) reinforcement (read: over-hyping) of ideas and/or beliefs that occurs when like-minded people communicate with each other.
Meeting Chairperson: Tonight, we're going to discuss the genius of President George Bush... (to person leaving) Excuse me, where are you going?

Smart person leaving: Someplace where I won't get brain damaged from the impending incestuous amplification.
by Man-Machine November 01, 2007
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