Chapter 2 explores the sexual norms implied by the three main forms of consequentialist moral theory: act, rule, and preference utilitarianism. Among all the theories surveyed, consequentialism is the most radically revisionist. It not only easily justifies cases of bestiality, necrophilia, incest, and cannibalism but also appears to impose a “perverse obligation”—a demand for sexual generosity in a far wider range of cases than conventional morality permits.