This rather cursed screenshot was sent to us, and we regret to inform you that quite a lot of people seem to believe this myth, and related myths surrounding the vulva. These myths been around for literal millennia, even though there is no rooting whatsoever in reality. Let's take a little look at the history of misogyny and racism inherent in this belief...
A caveat: Throughout history, a lot of written sources have used terminology very inconsistently, to the point that sometimes it's hard to know exactly what the fuck they were talking about. For example, "nympha" was sometimes used to refer to the clitoris, sometimes the labia minora, sometimes both.
However, what is clear is that a hell of a lot of European men since Ancient Greece had some pretty gnarly attitudes about how the appearance of the vulva said something about the character of the person.