Bukkake, Gokkun, Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. Unlike the traditional definition of the term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes masochistic sexual pleasure in it. Erotic spanking is the act of spanking another milf fuck person for the sexual arousal or gratification of either or both parties. This technique may include the use of a simulacrum, or artificial vagina. Sexual scenarios may involve male domination, female submission, exhibitionism and erotic entertainment. A variant of this is known as ATOM or ATOGM where the insertive gay hentai partner removes his penis from one recipient anus and inserts it into a second recipient mouth. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing gay fuck the act. Hugo Ohira, director of marketing for Silvercash, rhetorically asks Who does not like spewing their load on a pretty young face? The buttocks in human females thus contain more adipose tissue than in males, especially after puberty. Targets the male audience, but is much less popular than Yaoi. Not all crush fetishists are that extreme! 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. This is commonly called double anal or double stuffing. Emetophilia pornography involving vomiting and gagging. While most tentacle erotica is animated, there are also a few live-action movies. Within a BDSM or D/s context, facesitting can be an especially intense form of erotic humiliation. An orgy is a gathering where guests freely engage in open and unrestrained sexual activity or group sex; and a bunga bunga orgy is an orgy in which participants have sex underwater, such as in a swimming pool or a hot tub. Actors are mostly amateur; any well-known actors in bisexual porn tend to be from the gay pornography industry.