i kinda don't wanna click on any of the links.. or watch any of the clips to look for the possible prolapse/sleeving moment *blechface*
but if ya seeing the vagina lining outside of the body.. is a lack of lube. women have a certain amount of give and pull to the vagina lining.. is all the lil wrinkles and folds that allow a vag to stretch for tenting and depth of penetration. but.. is not really meant to be pulled out.. if the skin is being pulled is from too much friction. lack of arousal on the lady's side, or she's just not a heavy lubricator.
the friction/tugging can be painful, cause short term damage like vaginal tears, and increase the risks for a woman to contract an STI. repeated trauma can lead to actual full vaginal prolapse. sort of a vaginal canal de-gloving
in porn? lack of arousal is where i would put my money.
all the talk of vaginal prolapse. Sharon Mitchell *former porn star, current medical professional* mentions rectal and vaginal prolapse as being in her top 5 injuries she treats related to porn, specifically for women who do DP and insertion porn.
i think the top three were UTIs, yeast infections, and gonorrhea.