The little space between a girls upper thighs and just below her cooter as she stands or walks with legs together. The open space forms the shape of an upside down triangle. It is usually reserved to fit/thin girls as chubby thighs tend to crush the happy gap. Fall into the gap. Same as happy gap.
Wow! Look at that 2 finger cranston gap.
by kegdrink April 05, 2009