gú-see gú-nee: The act of squeezing a woman in between her legs at the labia, from either the front or from behind. Derives from the word "goosing", to describe pinching a someone's behind, combined with "goony", to denote the specific location as being the "goona" or vagina.
The phrase is said while squeezing the area, as an exclamation, e.g., "Goosy goony! Goosy goony!"
by Hal Jackson April 06, 2006