When you drunkenly fuck a slut in every hole possible and then after she falls asleep you sleep walk over to your friends bed and piss on them. Generally applies to a hotel/vacation home.
Jim's bachelor party in Atlantic city was a fucking blast! Too bed Ryan pulled a dirty nancy on jeff and bach..
av Thebachelor 24 september 2013
1 more definition
A threesome involving two guys and and a young, innocent virgin 18 year old for a pornographic film.
I can't get off to anything less than Dirty Nancy
av wigglex4yeah 30 november 2011