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The act of penetrating an acquaintances anal cavity with a finger or fingers which is followed by the wiping of the same fingers above the acquaintances top lip creating a moustache effect......usually done in an exquisite hotel room!

Cousin of Dirty Sanchez
While out of town on a trip, the guys passed the time by giving each other a "filthy Brasfield"!
by Thrust Harder February 27, 2010
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