I’VE always been curious why many consider a little mole here or there particularly erotic. And it isn’t just a contemporary custom, though it’s consistent with the rash of tattoos people seem to be getting. I personally don’t find tattoos interesting or erotic, though they did, at first, clearly border on the exotic.

Facial moles seem to have been the rage in sixteenth century France, when discrete moles on the face, neck, shoulders, pectoral or other “hidden” areas were conside...