Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum of heterosexual, homosexual, and transgender sexual acts in addition to unique fetishes and philias. Freud, however, considered such extensions of sexual interest naked milf to fall within the range of the normal, unless marked out by exclusivity . They cited the Internet and text messaging as common ways of organising meetings. Other possibilities are possible, such as a man having sex gaysex with two women who are having sex with each other. Boot fetishism is a sexual fetish hentai movies dedicated to boots. Emetophilia pornography involving vomiting and gagging. Such films continued to be produced but could only be distributed by underground channels. The higher pay scale and profile within a production often leads to group scenes where a straight actor only tops. A facial is a form of non-penetrative sex, though it is generally performed after some other means of sexual stimulation, such as vaginal sex, anal sex, oral sex or masturbation. Internal ejaculations, followed by images of semen dripping from the anus, are sometimes depicted in bareback gay pornography, where they are referred to by the term breeding or the reverse money shot. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. In gay pornographic movies, actors who identify themselves as heterosexual, but who nevertheless perform explicit sexual acts with other males on film do not face the same stigmas as the mainstream acting counterparts and indeed can rise quickly to being featured actors. Enema pornography involves adults given enemas to others, often fake. This category also includes pornographic home movies. Technically this is a form of exhibitionism rather than group sex per se. Pornographic films or sex films are films that present sexually explicit subject matter for the purpose of sexual arousal and erotic satisfaction of the viewer. There is also some evidence that pornography can be used to treat voyeurism.