"A perfect wife has a clearly defined endurance sub-zone and slight traits of a receptivity sub-zone. Put simply, this means she doesn't care a great deal about things like ethics or morals. A woman with pubic hair like this would be able to bear a lot, but also have a sexual side that allowed for unbridled wantonness," the pubic hair expert tells Asahi Geino. "In short, hair like this would indicate a good wife during the day who turns into a whore a night."