It depends on the size of a womans vagina and the position she is in:How far, in inches, is that inside most women's vaginas?
-with her legs pulled up to her chest it is possible to press the epicenter with your fingers so 4-5" in - it isn't the deepest part of the vagina. You wedge your finger or glans into the corner of the front of the cervix, and press because it reacts to pressure, stimulating the clitoris while pressing the epicenter can help trigger the orgasm.
- the g-spot is easy to find, when your woman is on her back, stick a finger in the vagina (palm up) press firmly and follow the contour of the pubic bone until you find some rougher skin (2-3" in)- this is the G-spot, it maybe slightly to the left or right (11-1 o'clock), it also reacts to considerable pressure. It can cause orgasms very quickly if she is excited but may also create discomfort in the form of a desire to urinate, if she overcomes this she might have a female ejaculation.
- The AFE zone is supposed to be as effective as the g-spot at triggering orgasms on some women, it is a slightly rougher zone of skin that reacts to friction. One position that really hits this spot is when you are on your back, feet flat on the bed/floor you cuddly tightly your woman who is above you on her knees (facing you). You lift your pelvis and start thrusting like a mad man as fast as you can, the penis will mainly press on the anal side of the vagina where the AFE zone is. She will start going wild when you hit the spot!
Again it is only 2-4" in or 2/3 of your finger.