They are most often featured with male partners, but are also featured with other transsexuals or cissexual women. Felching involves drinking recently ejaculated semen from the vagina or anus. 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. In recent years, Japanese films of this genre have become more common in the USA and Europe although it still remains a small, fetish-oriented part of the adult film industry. Gaping in pornography refers to scenes of anal sex with a focus on the recipient’s anus remaining open for a period of time after the erect penis or dildo is removed. Yiff or Yiffy pornography features Furry or anthropomorphic animals in an erotic or sexual context. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . The gay hentai Japanese sex industry uses the term Paizuri . With second wave feminism and growth of scholarship in women history and sexuality in the 20th century, the definition of lesbian broadened, sparking a debate about sexual desire as the major component to define what a lesbian is. A variant of this is known as ATOM or ATOGM where the insertive partner removes his penis from one recipient anus and inserts it into a second recipient mouth. The fetish centers around this fantasy portrayal. BDSM pornography depicts bondage and discipline, domination and submission, sadism and masochism. These typically are leaked to the public via the Internet, naked milf with or without the celebrity consent. Often, slave contracts are set out in writing to record the formal consent of the parties to the power exchange, gay bear porn stating their common vision of the relationship dynamic. This is also the case in many relationships not considering themselves as sadomasochistic; it is considered to be a part of BDSM if it is practiced purposefully.