The dried semen of a black man often used in magic potions and valued in some remote parts as an aphrodisiac
Joe: "Have you tried viagra?"
Dave: "Screw that! i took some black man's dust and i had an erection for 4 days!"
by incatatus May 5, 2012
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the fine dust created using an electric razor.
dude... get the man dust out of sink.
by O.B.G.Y.N. Spurius April 23, 2009
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