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A box in which all of the world's shush is stored. When someone politley requests that someone be quiet, they are drawing from the allmighty Shushbox. Alternately, instead of saying "shh" you can simply say "shushbox".
Person 1: I just got the new Ashlee Simpson record.
Person 2: Uh, Shushbox!
by Endgame October 09, 2006
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