Chivers shows the study participants explicit photos or movies—of women and men having sex, of women and women having sex, of men having sex with men. That’s when things get interesting. The women who describe themselves as heterosexual have physical responses to just about everything they see—a man having sex with another man, a woman going down on a woman, a man and a woman doing it. They are adventurous, at least in their minds, un-finicky and indiscriminate omnivores. They take it in with category-blurring gusto, liking what they see regardless of who they presumably are.