The effect is to give the viewer the sense that they are experiencing the sex acts that they are watching, as opposed to simply watching others as a voyeur. Transwomen are most often featured with male partners, but are also featured with other transsexuals gay porn or cissexual women. It can be combined with fellatio and the woman may move her breasts up and down on the penis for an additional stimulation, usually before the man reaches orgasm. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. Given the wide range of practices, some of which may be engaged in by people who do not consider themselves as practicing BDSM, inclusion in the BDSM community or subculture is usually dependent on self-identification and shared experience. However, sex researchers and adolescent health care professionals have found no evidence for the existence of rainbow parties, and as such attribute the spread of the stories to a moral panic. These typically are leaked to the public via the Internet, with or without the celebrity consent. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. Voyeur or peeping Tom pornography is usually more staged with the subjects aware of the cameras, sometimes openly including this exhibitionist awareness. Transsexual pornography features transwomen performers, who typically have male genitalia and augmented female breasts . Bukkake pornography usually depicts numerous men having sex with one woman, with multiple, usually 10 or more, men ejaculating on the female face. Enema pornography involves adults given enemas to others, often fake. Crying pornography that features participating actors crying. RACK may be seen as focusing primarily upon awareness and informed consent, rather than accepted safe practices. Through the 1990s, mainstream movie and television actors have been more willing to portray homosexuality, as the threat of any backlash against their careers has lessened and society acceptance of gay and lesbian people has increased.