I know the G-spot (in the vagina) is called the Grafenberg spot (since he was the doctor who discovered it), but how did Grafenberg discover it? Was it by accident? I heard he was a gynaecologist, so whilst examining he hit the spot, so to speak, by accident lol? What about in men? Since it's only recently that the prostate is widely recognised as a sexual pleasure centre, did generations of guys who got it in the ass moan in delight without knowing specifically why?