amazon position
A sexual position in which the receiver initiates sex by riding the penetrator's penis. However, unlike cowgirl position or straddling, the receiver holds the penetrator's legs back and does the moving and penetration on their own.
It's sort of a reversed mating press.
May be related to femdom or bdsm if a male partner is bound in any way by a female partner or if he's in amazon position against his will.