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. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. Some men also enjoy anal stimulation, videos gays with fingers or otherwise, without any prostate stimulation. Femdom features BDSM scenes in which the dominant partner is female. Men may find stimulation of the anus, rectum, and adjacent organs enjoyable. Commenting on why there are not as many female macrophiles, psychologist Helen Friedman theorized that because women in most societies already view men as dominant and powerful, there no need for them to fantasize about it. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Lying face down on a comfortable surface such hentai videos as a mattress or pillow, the penis can be rubbed against it. Detective magazines, comic books and early fetish magazines In the early 20th century, Detective magazines covertly provided a way of publishing bondage imagery. Rape pornography features performers simulating rape. The original definition of dogging – and which is still a closely related activity – is spying on naked milf couples having sex in a car or other public place. They further argue that setting a discrete line between safe and not-safe activities ideologically denies consenting adults the right to evaluate risks vs rewards for themselves; that some adults will be drawn to certain activities regardless of the risk; and that BDSM play—particularly higher-risk play or edgeplay—should be treated with the same regard as extreme sports, with both respect and the demand that practitioners educate themselves and practice the higher-risk activities to decrease risk.