s lips look like, there are a series of
illustrations on the internet that I think you can find by googling Betty Dodson, the name of the artist who drew them. She was just an artist many years ago, and did a graphic series (for political reasons, I think) with illustrations of women masturbating, and the gallery was overwhelmed with letters from women asking how to masturbate. So she kind of lapsed into a second career about women's issues related to their genitals.