Top definition
When a man is doing a woman doggy style on any type of watercraft, then he screams "Dirty Gilligan", and thrusts into her rear as hard as he can knocking the woman overboard.
Last Tuesday Thurston gave Ginger the old Dirty Gilligan down by the tip of Bab's Island.
by Rick Prescott Sr. June 04, 2007
Get the mug
Get a dirty gilligan mug for your friend Josรฉ.