It's refreshing to see some realistic info, and real responses from the ladies, here...and a guy or two willing to own up to the reality of having a really big cock (a few have shared similar things in private...that the really big guys almost never get themselves completely into women)....
To begin with, I think most cock sizes thrown out in a forum like this are about 2" longer than they really are...I guess the old joke is, guys are measuring from their assholes.....
Personally, I've recently been with one guy who's probably over 8"...10" or larger by measurement standards here...and that is pushing my max (even as much of a size queen as I am!), I'm not sure he can really go balls deep in me or ever could...though we'll have to try at least once more the next time he is back in town....
My most telling anecdote is that a friend of mine knows a call girl here in town...and she will not see "bigger" guys, she says it leaves her pussy torn up and sidelines her for the better part of a week...and that's a girl who fucks all day, day in and day out, professionally! She may be on the small/tight side of average...but it goes to show....
Personally, I have now had the privilege of being in a scene where I've gotten to watch about a dozen girls take real BBC for the first time. One, though totally eager for it, couldn't do it, and because the guy was thick, could only take less than an average cock length of him...a lot of the rest struggled to take it all, though seemed to be getting at least close by the time an experience Bull had relaxed them, opened them up, and put them in some good positions.... I think my GF bottoms out somewhere between 7" and 8" (real size - 9-10" or larger by measures here) and can't quite let a Bull on the larger side go balls-deep though it works out almost like it... the guy who is over 8" (real measurement) that gives me trouble, she definitely comes up just a bit short with....