Definitions by 3fingerflatspot

flat spot 

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.

flat spot by 3fingerflatspot January 28, 2010