Bringing hips forward is such a delight for most women, since it places comfortably in contact body parts hardly ever reached in more traditional positions. In this instance he takes her by supporting her gluteus against his muscles. She may either stretches or bends legs against his torso and places feet on his chest. He gets plenty of her clitoris and a good view of her vagina (so much for the voyeuristic) on the boot. Her flexibility sets its pace, as they feel fit.