As you may know, this type of orgasm was the only type Freud and other men of his time felt to be legitimate types of sexual pleasure for women to experience. Unfortunately for women, only about 20% can receive an orgasm through vaginal stimulation alone. The other 80% need something a little extra.

Before we get into that, let me explain exactly what we mean by vaginal orgasm. A vaginal orgasm occurs solely because of stimulation of the vagina. That stimulation is usually in the form of the thrusting of the male penis during vaginal intercourse.

The reason most women do not receive an orgasm just from penetration is that the vagina is not a highly sensitive area. This is actually a good thing. Remember that the vagina is not just used for sex but also for delivering babies. If the inside walls of the vagina were made up of concentrated nerve endings like we find in the nipple, the clitoris, or the penis, then childbirth would be even more difficult for women.

In fact, only the first two inches of the vagina are sensitive at all.

So why do some women have orgasms solely from vaginal stimulation? The answer is they probably aren't. Women who report vaginal orgasms benefit from their anatomy. In some women, the labia minora are formed in such a way that vaginal penetration actually causes the labia to rub against or gently pull on the clitoris. This, not vaginal stimulation, is leading to the orgasm in most cases. Technically, however, this would still be considered a vaginal orgasm because there is not direct stimulation of the clitoris.

Another reason why some women report having vaginal orgasms is that the shape of the penis and their preferred position allow for stimulation of the G-spot. Because the G-spot is linked to increased pleasure and may also induce orgasms, this is another possibility worth considering.

The bottom line here though is that vaginal orgasms are not common. Men and women need to realize that penetration is often not going to be enough to accomplish the goal.