The space in between the top of a girl's legs directly against the vagina. Measured in finger-widths from behind. 3 fingers is the perfect width for a flat spot. If a girl has a 4 finger flat spot she is probably bow-legged.
I won't fuck a girl who doesn't have at least a 2 finger flat spot.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).