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A remark that informs an individual they have missed out on background information critical to a joke (or storey).
Joe: Hey Ben, remeber that book?
Ben: HAHA, yes, i'm sure the mice would be pleased with 42.
Daniel: What the? Mice?
Ben: (to Daniel) Backgrounding Daniel!
Daniel: Oh. Damn.
by Benni ( Zepher ) June 03, 2006
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