I wrote a more considered response just now, but it got erased, so apologies for the summary below.
My dentist told me that if you could relax the tissues enough, you could fit your hands and your feet into your mouth.
What kind of percent stretching are you talking about? Six inches to twelve, or more like ten to twelve?
Yes, I’m writing from my personal experience, as I can only assume you are.
Are we talking about the “grower vs. shower” effect here? Perhaps also insensitively called the “White Man’s Curse” or suchlike. Clearly a penis which can shrink to a fraction of its erect length is an advantage in cold climes. A well-known British Antarctic explorer (sorry, I don’t remember his name) said he wouldn’t take any more circumcised men on his adventures since they got frostbite on their glans too much. If you go on a run in sub-freezing temperatures for an hour, without a foreskin, or with a ten-inch penis that can’t shrink up close to your body, then you may hurt yourself and not even know it.
I’m not a medical person, but I wouldn’t go so far as to say “a real doozy of a medical condition.” Doug Kenney could stick his whole hand in his mouth, I don’t think I could manage it, but I wouldn’t leap to the conclusion that either of us is sick.
Again, numbers or percentages would be a big help. If you have a foreskin, then I’m not sure where you’d measure. If you don’t, then I guess you’d grab the semi-tight skin around the glans (grabbing the glans probably wouldn’t work too well).
I should probably take a digression into the foreskin. Skin doesn’t really stretch all that much (try yanking on your earlobe). It can bunch up, which is a lot of what’s going on with the penis. The foreskin is more of a region than a flap of skin. It goes out around past the end of the glans, and then turns back in and connects around the bottom edge of the glans. That “turned back in” skin gets rolled back out, effectively doubling the “length” of the foreskin (plus the foreskin is very “bunched up” so it gets a lot longer). In other words, if you have a foreskin, then just stretching your penis by the “end” of your foreskin will probably be an inch or two shorter than your erection, since all that skin turns back in to go around your glans, skin which would roll out and down your shaft (and also unbunches a lot).
One problem circumcised men can have is that they cut off “too much” skin off the end of the penis, so there’s no longer enough to “unroll” to cover the whole length of their erection. This can result in lifelong erectile pain, among other things. I don’t know if it can result in an erection that is “shorter” than it would be otherwise. It can result in scrotal tissue being pulled up onto the shaft during erection. This raises the question (among other things ;-) of how to measure the length of the non-erect penis. The skin of the penis is not, as such, connected to the underlying spongiform erectile bodies — it slides over it. If you have a foreskin, then it’s going to give you an extra two inches, but you can kind of palpate through it to locate the glans, and whether you have a foreskin or not, stretching from the business end of the penis could still enlist scrotal skin (which is bunched up and easily stretched) and even a little of the skin superior to the penis over the pubis mons.
Anyway, blah, blah, blah. As I said, it’s problematic. It’s like comparing apples and oranges, or bananas and peeled, half-eaten bananas. A guy with a foreskin may get the same stretched length as erect length, but probably less an inch or two, a circumcised guy, who knows? I guess it’s a grower-shower thing. A guy with a restored foreskin, how far restored? All bets are off.
To paraphrase the time-worn British expression, “The proof of the pudding is in the ramming it down your throat.” I guess what I’m trying to say is that probably the only reliable way to measure an erection is by getting an erection. All this talk of stretching leads me to believe that there may be a lot of fundamental misconceptions of how this organ is made up and how it works. Half of all people have one, so there’s probably one handy near where you are right now.
So yes, again, percentages or actual measurement numbers would be helpful. Otherwise, we’re kind of in the bush here.
By the way, congrats on being of porn star proportions. I find that it’s not so much the sheer size, although that’s impressive, but the number of additional positions that become available (obviously important in the industry). Otherwise, Kama Sutra poses that require too much “travel” can result in “decoupling.” Stuff like “Vlad the Impaler” and C.A.T., for instance, may start to become impossible below six or seven inches, but of course I wouldn’t know for sure.
Seriously, though, be careful going out in sub-zero temperatures for extended lengths (of time). If you don’t have a foreskin, or your Old Fellow can’t shrink up, I’d recommend something like a jock strap and a warm sock or two.