Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. A sub-set of vaginal fisting attempts to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. Male masturbation may differ between males who have been circumcised and those who have not. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. However the genre remains a very small proportion of the pornographic DVD market; for example at porn retailer HotMovies. This technique may include the use of a simulacrum, or artificial vagina. The terms can gaysex be complimentary or pejorative. Mutual masturbation can be practiced by males or females in pairs or groups with or without actually touching another person as indicated by the following examples of contact versus non-contact scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching. Rough sex pornography is similar to pornography featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being physically violent hentai movies towards them. Bukkake, Gokkun, Omorashi, and tentacle erotica are few uniquely horny milfs Japanese genres known to western viewers. Many men who like trans partners of any variety, known as tranny chasers, do not necessarily identify as gay themselves. Pornographic films present sexual fantasies and usually include erotically stimulating material such as nudity. The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . Pornography in the early 2000s.