The interaction between tops and bottoms—where physical or mental control of the bottom is gaysex surrendered to the top—is sometimes known as power exchange, whether in the context of an encounter or a relationship. The person sat upon may be in bondage, sexually submissive, or simply held down by the body-weight of the other person. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. A common way that these are depicted in a single scene is with one woman and two men performing together. Clothed female, naked male is a genre of erotica featuring one or more nude men and one or more clothed women. For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. Softcore pornography momporn generally hamster mobile porn contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore pornography may contain graphic sexual activity and visible penetration, including unsimulated sex scenes. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. Snuff pornography involves the actual death of any of the participants, consenting or otherwise, hentai movies simulated death is not considered snuff. The effect is to give the viewer the sense that they are experiencing the sex acts that they are watching, celeb news as opposed to simply watching others as a voyeur. Consent is the most important criterion here. The name of the practice, when it is done in a repeated in-and-out motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea.