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The dirty, brown, non-fecal, scuff marks that are left on your freshly cleaned toilet seat after someone who has a dirty sweaty ass sits on your toilet, and squirms. This phenomenon is usually cured when the nasty culprit washes their dirty ass.
Jaslene yells to Cherise, "Girl is this shit on your toilet seat?" Cherise replies, "Naw girl its prolly,"booty dirt." "My brother don't know how to wash his nasty ass!"
by RICO1976 April 24, 2009
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What the dark skinned girls on music videos have on the curve of their booty. ie: Chingy Uncut
That girl cute but she got some serious booty dirt, dang!
by Cassandra May 31, 2004
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