The ratio of thigh to butt on a woman; easily viewable by a visible "crease" between the thigh and butt. The thigh to butt ratio is larger based on the length of the crease.
Steve to Tim: Damn, look at that girl's thigh butt. I would just love to put my hand in that crease...or maybe just swipe my ATM card.
by damadalpha January 30, 2009
when the butt is so flat that it connects straight into the thigh;
or when the butt and thigh are so big that you cannot tell which is the butt or the thigh
or when the butt and thigh are so big that you cannot tell which is the butt or the thigh
she has a butt-thigh!!
by Juju Huckabee September 19, 2006
the absence of a butt, when one's butt merely looks as if it were part of one's thigh. Comes from the ancient Greek goddess, Rebecca.
by Lindsay August 29, 2004