Hair around the genitals is, obviously, associated with sex. Natural, full pubic hair on women has indeed been considered sexy at times, and not just in the 1970s. Its celebration reverberates through history in art, literature, and graffiti. In Pompeii, a Roman scratched onto a wall his crude opinion that a “hairy cunt” was preferable to a bald one because it “retains the warmth and stimulates the organ.” The Tiv people of Nigeria find pubic hair alluring—the more the better; they’ve written nuptial poems about it. Similarly, the Kwoma people of New Guinea consider the “thickest and most luxuriant” pubic hair a signifier of female beauty.…