Top Definition
an odious, sedimentary mist derived from the anus containing fine particles of fecal matter when expelled through the spincter. Tends to be unpredictable and can result in what is known as a 'dookie stain'/'shart'
Oh NO!!! I just blew fecal dust all over my new pants, down my leg and into my shoe.
by easy mackin February 21, 2010

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