Use of the agreed safeword is seen by some as an explicit withdrawal of consent. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. Concerted deployed sexual rejection exercised on the partner can be an aspect of Dominance and Submission as well. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Throughout history, women have not had the same freedom or independence to pursue homosexual relationships as men, but neither have they met the same harsh punishment as homosexual men in some societies. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. 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 pub, hotel, restaurant, theatre/cinema, office, club etc. Diaper fetishism, nappy fetishism anime hentai or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. When used as an alternative to penile-vaginal penetration, the goal may be to preserve videos gays virginity or to prevent pregnancy. If one person is penetrated by two objects, it is generically called double penetration . In the 18th and 19th centuries, some European theologians and physicians described it as heinous, deplorable, and hideous, but during the 20th century, these taboos generally declined. For example, in Australia it is rated Refused Classification . Being forced to wear diapers as a form of humiliation is sometimes a behavior encountered in sexual masochism. The cover can have hinges or be a separate part. Internationally, hentai is a catch-all term to describe a genre nude milfs of anime and manga pornography. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature. Hermaphrodite, also known as herm, refers to pornography, typically hentai, that features persons with the genitalia of both sexes.