This is when you have a bald man, and his lady/ male companion which ever is perferable takes a shit on the top of the bald mans head to make a "Toupe".
I just dirty duganed my lover.
by Bob sacamano May 22, 2004
1 more definition
when you get the beer shits in the shower and u black out trying to eat them of the floor.
i had a dirty dugan problem last evening in the lavatory at my kissing cousins house.
by tjwalks May 23, 2004