Well i've never seen any. Granted it's been a while since I was of an age where a large number of women I slept with were of the virginal mileage down there. But I guess you are right there must be some genetic thing that results in a small number of women with floppy roast beef downstairs, from birth, or maybe from puberty? You've done it. You've identified the genetic code that results in hookers, whores, and porn stars!
But wait. with porn stars we have this thing called videography, databases that track the movies they've starred in and when, where we can watch the actress over the course of her career. Isn't it odd that this genetic marker you've identified that made flappy pancake labia's only seems to manifest later in their careers? It's like they start out their careers all nice and trim but after a few years of hardcore gangbangs and extreme penetration films there genetic code activates and that shit is all flapping in the wind. Or are you saying they are all wealthy women from privileged families and can afford to get the surgery well before they ever start making porn. Like labia is like fingernails and that shit just keeps growing all their lives and they have to retrim again later?
you are right though, my casual observations are astoundingly retarded.