Gay-for-pay describes male or female actors, pornographic stars, or sex workers who self-identify as heterosexual but who are paid to act or perform as homosexual professionally. The person receiving anilingus is regarded as the passive partner in the act, and the person performing anilingus is the active partner. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Double penetration of the vagina, anus and mouth, can involve: Simultaneous penetration of the anus by two penises or other objects. It is sometimes combined with BDSM features. It is also known colloquially as gushing or squirting, although gay hentai these are considered to be different phenomena mature milfs in some research publications. In more vigorous forms of fisting, such as punching or punchfisting, a fully clenched fist may be inserted and withdrawn slowly. Sexologist Alfred Kind suggested that the buttocks is the primary sexual presentation site in primates. Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme. The arousal from being desperate gay movies comes from the sensation of having a full bladder. Detective magazines, comic books and early fetish magazines In the early 20th century, Detective magazines covertly provided a way of publishing bondage imagery. Transsexual porn star Wendy Williams has stated that transsexual Porn is classified as Straight Specialty. Transsexual pornography is a genre of pornography. Threesome can also refer to a love triangle, a three-way romantic relationship. A sex party is a gathering at which sexual activity takes place. The term Asiaphile is sometimes used to describe the same phenomenon as is yellow fever . Femdom features BDSM scenes in which the dominant partner is female. Cuckolding can also be mixed with other non-monogamous relationship arrangements with which it has substantial overlap such as Swinging, wife-swapping, open relationships, and polyamory, etc.