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. This stop and go build-up, known as edging, can achieve even stronger orgasms. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed 3d hentai by a celebrity and their partner. Pro-am pornography is sub-genre of amateur pornography that refers to professionally made porn that features amateur actors/actresses, often appearing for the first time in a pornographic film. There are number of types of sex parties: Swinger party/gathering A swinger party or partner-swapping party is a gathering at which individuals or couples in a committed relationship can engage in sexual activities with others as a recreational or social activity. The inside of a smotherbox is often padded to provide support for their neck and prevent their head from moving. The smotherbox is placed on a stable surface. 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. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . A few extremely momsex flexible males can reach and stimulate their penis with their gay bear porn tongue or lips, and so perform autofellatio. Rape pornography features performers simulating rape. There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. Starting with erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic anime .