athletic butt crack
crystle was known to have the most athletic butt crack of the bunch, as evidenced by her ability to clear the room at a moment's notice
butt cracks having a wide range of ability, including normal to paralyzing digestive functions as well as the power to crush objects of all shapes and sizes
"crystle was known to have the most athletic butt crack of the bunch, as evidenced by her ability to clear the room at a moment's notice" What is the definition of "athletic butt crack"?