The stimulation may involve hands, fingers, everyday objects, sex toys or combinations of these. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or anus and rectum, for sexual pleasure. Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. The interaction lesbian hentai between tops and bottoms—where physical or mental control of the bottom is surrendered to the top—is sometimes known as power exchange, whether in the context of an encounter or a relationship. RACK may be seen as focusing primarily upon awareness and informed consent, rather than accepted safe practices. Bondage is usually, but not always, a sexual practice. As in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. Pornography is generally classified as either softcore videos gays or hardcore pornography. Arguably the most famous example of the genre is the Taboo series. Contact mutual masturbation One person touching another person to masturbate. The fetish centers around this fantasy portrayal. Exhibitionist pornography features performers, usually female exposing themselves in public and spans simple flashing to public sex. It is sometimes described as a sexual fantasy, by women or men, depicting an exhibitionist or physique worship scenario. For example, the Kama Sutra, in particular, goes into specific detail on how to properly strike a partner during sex. Cum swapping pornography involves performers trading semen between their mouths. A facial is a form of non-penetrative sex, though it is generally performed after some other means of sexual stimulation, such as vaginal sex, anal sex, oral sex or masturbation. These typically are leaked to the public via the Internet, with or without the celebrity consent. They cited the Internet and text messaging horny milfs as common ways of organising meetings.