Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, film, video, and video games. It spawned numerous sequels, several of which won adult film awards. The concept of lesbian, to differentiate women with a shared sexual orientation, hentai videos is a 20th-century construct. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography gay twink porn for heterosexual female and homosexual male consumption. Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. Tentacle rape or shokushu goukan is found in some horror or hentai titles, with tentacled creatures having sexual intercourse with female characters. Gloryhole pornography features women performing lesbian milfs fellatio on unidentified men through a small hole made in a bathroom divider. The name is a reference to gonzo journalism, in which the reporter is part of the event taking place. Pregnancy fetishism is a context where pregnancy is seen by individuals or cultures as an erotic phenomenon. Actual spying may violate privacy and/or trespassing laws in many countries. For example, in Australia it is rated Refused Classification . There may be more than two participants; both group sex and gang banging can be included. Even though the performers who perform in these films typically appear on many reality websites within a short span of time, most of these websites claim that each of them is an amateur. If ejaculation is onto the other person face it can be called a facial. The person receiving anilingus is regarded as the passive partner in the act, and the person performing anilingus is the active partner.