The woman kneels astride the man who is lying down, opens her thighs, and sits on the penis. She then moves her hips vertically and horizontally, to maximize the sensations on     the clitoris and the vaginal walls, or to lead the man more quickly to an orgasm. The rhythm, speed,    and movements are under    the complete control of the woman. The man, rather passive, can caress her during this time or can guide her movements. The man can fold his legs a bit in order to lower his excitement and slow down ejaculation.