Haha, I love that your response to having sources cited at you was to just totally disregard them.

research has not found significant differences between vaginal size of women who have given birth and those who have not, in most cases.

That said, many sexual health professionals surmise that if vaginal size doesn’t change much, if at all, after giving birth, it is unlikely to change much from sex with a well-endowed man. This is because the vagina is a fibromuscular tube and it tends to accommodate, and fit around, objects that penetrate it.

Come on dude. Vaginas don't get stretched out by sex.