amazon position
A female-dominant sex position in which the woman rides her partner while their legs are folded back against their chest, or spread wide with their feet in the air. In either case, her partner's thighs are in front of her rather than behind. Also known as a reverse piledriver. A skilled woman in this position can emulate the pelvic thrusting motion typical of a male partner, giving a near-complete feeling of role reversal.
May be related to femdom or bdsm if the partner is bound or in amazon position against their will.