Is there really a G-spot?
In a paper from Cairo University, the authors investigated the hypothesis that the vagina generates electric waves that effect vaginal contraction during penile thrusting. They found that electric waves could be recorded from the vagina. They also postulated that there was a vaginal pacemaker that seemed to represent the G-spot, which is claimed to be a small area of erotic sensitivity in the vagina.
The G-spot is simply a small area located on the upper wall of the vagina, toward the belly, about 2 to 3 inches from the vaginal opening. The G-spot was named in honor of Ernst Grafenberg, a German physician who, in the 1950s, wrote an article that mentioned an erotic zone on the anterior wall of the vagina that would swell during sexual stimulation.
There are various opinions on the best way to find the G-spot. Some women say that being on top during intercourse works best. Others swear by rear entry as the best way to hit the G-spot. Some even say that because of its location, a shorter, smaller penis may actually be more effective at reaching the G-spot, A clue to its location may be that some women feel a sudden urge to urinate when their partner hits the G-spot, which is located right near the urethra.