This position has the
woman laying on her back and bringing her legs right back until her knees
almost touch her shoulders. Her lower legs pointing straight up with the
feet resting on the mans shoulders to support him. He can penetrate while
directly over her.
With this position the man can achieve maximum penetration and it can give
very different sensations, but the woman needs to be very flexible or it
can be a painful position if held for any length of time.