The G-Spot is an area of nerve tissue located about halfway between the back of the pubic bone and the tip of the cervix inside a woman's vagina. It was named for German physician Ernst Graefenberg, who first wrote at length about the area in the 1940s. It is sometimes also referred to as "the female prostate" or "the urethral sponge." Some women report ejaculating a fluid from their urethra when their G-spot is stimulated.

In The Good Vibrations Guide: The G-Spot, Cathy Winks describes how a woman can find her G-Spot: "You'll probably find it easier to try squatting, lying on your stomach or propping yourself on your hands and knees. Reach your fingers an inch or two in from the vaginal opening, and crook them toward the front wall of the vagina in a 'come hither' motion. The G-spot is responsive to pressure, but not to light touch. If you brush lightly around the inside of the vagina, you'll probably not feel anything. Instead, press firmly. Remember, the G-spot isn't on the vagina wall; it's felt through the vaginal wall. As you explore the vaginal wall from the pubic bone up toward the cervix, you should feel a slightly ridged area that begins to swell. You may find it helpful to take your other hand and press down on the outside of your belly just above the pubic hair line; sometimes you can feel the G spot area swelling between your two hands."