On the mathematical issue:
Length x girth works, nearly. To make your calculations perfect, you'd have to calculate the surface of the head too, but I guess that would require some advanced mathematical methods and some computer power to do so, because it's really irregular. Since the penis is no cylinder, the top and bottom surface don't have to be counted, or do you guys have soda-can-shaped penises now, which are detached from your bodies? The interpretation is somewhat tricky. Length and girth have domains, limited by nature's possibilities. I guess if we did some in-depth research, we would find a girth/length ratio, which would simplify the calculation, and then we could make full use of the surface formula.
Still, I try to keep mathematics out of my bedroom. Stretching is great, as long as it isn't too hard, and maximum friction between me at my best-comfortable stretch and a guy fully in will be maximum pleasure, calculated or not. |