The cover can have hinges or be a separate part. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. Female dominance refers to BDSM relationships and BDSM scenes in which the dominant partner is female. Barebacking usually refers hentai porn to a conscious and deliberate choice to forgo condoms. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. Irrespective of the legal or social view of pornography, it has been used in a number of contexts. Mutual masturbation, gay bear porn mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. Sigmund Freud considered foot binding as a form of fetishism. Pussing: British expression for an activity involving a consenting couple where the male partner watches the woman urinate otherwise undetected in a semi-public place, usually a toilet cubicle at a horny milfs pub, hotel, restaurant, theatre/cinema, office, club etc. Bukkake pornography involves a performer, usually female, onto whom several men or women ejaculate, usually on the face. In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist. Buttocks are sometimes emphasized in pornography, where they are often referred to as booty. At the end of the evening the female partners would randomly select keys from the bowl and leave with that key owner. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. A homosexual threesome would involve either three men or three women. Because the viewing of such films carried a social stigma, they were viewed at brothels, adult movie theaters, stag parties, at home, in private clubs and also at night cinemas.