Follow IDEAL’S link to Penissizedebate that he posted. It’s probably the quickest way to find what it is you’re exploring. I would, however, quibble with some of the lengths written on it.
If my current S.O. isn’t quite stimulated enough, I can reach her cervix with my finger; about 2-1/2 to 3 inches. When she is stimulated, and begins to “tent,” her cervix retracts and takes on a new angle, I’d say about 5 to 5-1/2 inches deep.
To complicate matters, the depth and angle changes for different times of her cycle! The feeling a girl gets from having her cervix bumped ranges from annoying to painful. Sliding against it can be enjoyable to a girl, depending on her level of excitement.
The cul-de-sac is that area around the cervix. The cervix protrudes into the space of the vagina much in the same way that your uvula (the thingy hanging in the back of your throat) protrudes into your oral cavity. Of course, your throat keeps going, the vagina does not. THAT length varies from gal to gal, and can eventually accomodate greater lengths.
Girls vary in how they prefer to be stimulated, but my current prefers that I stay deep and grind as opposed to thrusting. Just before she climaxes, she lifts her legs back so I get deepest, and then I can feel the bottom. In the missionary position, I estimate that the cul-de-sac would be 6 inches deep for my S.O.
By the way, I could reach the cul-de-sac before I started PE. I’ve since gained 3/8” over the last 2-1/2 months, and the last three times we had sex, my S.O. didn’t lift her legs back because I was already deep enough! In fact, she needs at least one orgasm before she is ready for me to go deeper. Life is good!<grin>
