A sexual maneuver involving two females and one male. Both females are in the "doggy style" position next to each other. The male, with one hand behind his back and the other hoisting an alcoholic beverage high into the air, then proceeds to alternately penetrate both females in the "poop chute" (anally) "raw dog" (without a condom) with increasing speed.
Adam: Yo, did you hook with those two chicks last night?

Mike: Did I hook with them?? I gave them the Dirty Derr my friend!

Adam: Hell yeah man!! That's EPIC!
ayon kay AChosen1 ika-26 ng Abril, 2009
8 Words related to Dirty Derr

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