A skank bitch that rarely bathes and turns her underwear inside out to get extra days out of them
Man did you get a whiff of that dirty duncan that just walked by? good lord she smelt like fish sticks and gouda cheese!
by Big Bizniz August 15, 2008
To do it in the Dunkin Donuts parking lot.
"We did the dirty duncan."
by Percival Frankwiler November 24, 2005