Top definition
The dried semen particles that explode out of the anus during flatulence shortly after intercourse.
I was walking behind Shannon when I got a face full of Anal Dust. We all know what she did last night.
by Brown Streak September 09, 2012
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2
The scrapings of your shit and fart residue on your underwear, and the act of taking a dab of it.
I was so fucked up from that anal dust earlier.
by WhoTFisRyan January 12, 2015
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