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.
To be loudly spit roasted by two dwarves in a tent, usually although not necessarily a tipi, while passers-by remain unaware of what is taking place.
I thought there were some strange heavy breathing noises coming from that tent this afternoon. Turns out that the woman we were talking to yesterday was having an absolutely epic dirty Gillian. Saw her this evening and she looked happy, but she said she couldn't eat or sit down. Now I understand why.
The act of inducing a queef in your female partner. By mouthing the opening of the vagina like a trumpet, you blow into the opening until your face looks like that of Dizzie Gillespie. When finished, your partner will queef with extreme force. Usually a great ice breaker before applying The Angry Pirate.