Masturbation
The female sex organ most sensitive to touch is the clitoris which is like a very small penis. Female masturbation almost always involves stimulating the clitoris, either by hand or with a vibrator. For some women, the glans (or tip) of the clitoris is so sensitive that they do not enjoy touching it directly. Instead, they touch the clitoral hood and move it as it touches the clitoris. The clitoral hood is made of thin skin like an eyelid and normally covers most or all of the clitoris. Many women also enjoy the feeling of fingers or a sex toy in the vagina, but this is a secondary sensation that is not necessary for orgasm, and that rarely results in orgasm on its own. Some women find stimulation of the front vaginal wall particularly pleasurable. The anus is rich in nerve endings and is also sometimes stimulated during masturbation, as are the nipples.