“Explanations of straight men's homosexual behavior take the awkwardness, shame, and ambivalence attached to these encounters as evidence of discordance between self and behavior, forgetting that these affectations characterize the terrain of sexuality more broadly. For example, among the many costs of sexism is that sex is often utterly scripted and unsatisfying for straight women, and yet straight women's sexual dissatisfaction is rarely taken as evidence that they are acting out of accordance with their heterosexual orientation.”