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The act of checking your surroundings for any black people prior to making a potentially insulting racist joke and getting beaten. Usually the joker will state they are making the check out loud, much to the hilarity of those familiar with the term.
Johnny: So this black guy walks into a bar... Wait, gotta do a blackground check....

Tim: Oh, that. LOL.

Johnny: Nope, no can do, there's one over there.
by Artien_04 August 06, 2009
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