(must be outside) when you take a hit from a pipe or bong and go inside to grab a beer while still holding it in the letting out after taking a drink of the beer.
The dirty dan has been banned in 13 countries.
by the party brigade September 14, 2010
Giving with feces as the lubrication.
Eww did you see that! He just gave that guy on that bus the dirty dan!
by King Izzy The G $ June 20, 2006