A Gigatic pussy usually related to a girl who is a huge bossy bitch. Her pussy is likely able to eat small children and anything as heavy as a good sized watermelon. The 12 pound pussy likely has teeth and is very susceptible to crotch rot.
Guy 1: " Wow... my supervisor is a bitch!"

Guy 2: " Ya man, i bet she has got a 12 pound pussy, you better keep your hands away or she could swallow it hole!"

Guy 1: "Thanks for the heads up man"
by AvengerMan September 30, 2009