when a guy is fucking a chick A in the ass from behing, while chick B eats out chick A from underneath, and then the guy pulls out of chick A super fast and she shits all over the face of chick B. thus making Chick B a `Durty Gurty`
hey steve how was your night?
it was great i had a three way with those two girls and made the blonde a durty gurty!
by bobandyrandy August 19, 2010
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