as the only exceptions. Erotic sexual denial, including the use of a chastity device. Wearing of external signs of "ownership", such as collars. Public humiliation, in which the submissive's friends or family, or strangers, are aware of or even witness the treatment. Erotic objectification, in which the submissive is used as human furniture, such as a footstool. Embarrassment Facesitting Cuckolding, a mostly heterosexual fetish in which the dominant woman has sex with a man outside of the relationship, called a "bull", sometimes in the presence of the submissive man, who sometimes is allowed to masturbate while watching. If the man is not present, he might help her choose what clothes to wear when she meets the other man, or they might get together afterward so she can tell him about it, either while having sex or in addition to withholding sex. If the wife and husband are not together, the wife can call the husband by telephone, or use a video service like FaceTime, so the husband can witness what happens to his wife and how much she enjoys it. He may be expected to consume the bull's semen from his wife's vagina, or out of a condom. Some husbands film their wives' cuckolding, and help set it up; sale of these videos is the couple's livelihood. Sex between the couple may follow. In recent years there has appeared a reverse form of cuckolding, called cuckqueening (sometimes spelled cuckqueaning), in which the wife must witness and sometimes assist in her husband's sexual activity with another female. In some cases these threeways become long-term relationships. Another variant of the cuckolding fetish is that a heterosexual couple fantasizes that another man will impregnate the woman. The submissive's having to ask permission to orgasm during sex or masturbation. The submissive's being forced to wear a gag or restraints on the body. Forced masturbation in a humiliating manner. Enemas cause feelings of humiliation which are key to many of those engaged in klismaphilia, and watching the consequent defecation can amplify that humiliation. Candaulism. Some sexual humiliation involves physical inflicting pain, but much of it is far more concerned with ridicule, mocking, degradation, and embarrassment. Sexual roleplaying can involve humiliation. For example, one person might play the part of a dog because they enjoy being mock-forced into it, and the top might emphasize the lowness of the bottom's status as an animal, whereas another person