well I am not sure how to aim exactly for it I just know that it's towards inside the vagina on the stomach side... basically anything would do... but crucket penises hit the spot easier then any other... hope you are bending the right way.
Woman on her tummy with a pillow underneath her, guy entering her vagina from behind. Maximum stimulation, apparently. It was in that weird "geometry" thing Ewan McGregor was it.
