well 1st ive never measured the depth of a pussy, i bottom out, and ive never measured the legnth of my dick either, i dont read the magazines that tell me where to probe or where to rub, i learned from trial and error, like dont try the back door without asking, and take a few short shots before going deep, or my favorite from back iin the early days, the old finger test, and never eat strange pussy, stay high during the rainy weeks, the bridge of the nose is a helpfull tool, make sure you put new batteries in the toys, and always wash the toys before returning them to the toy box.
None of which came from a book or a magazine, and no i didnt know that the average depth of a vagina was 8" thats is actaully rather amazing, and make want to get out the ruler and see how things measure up…