Gay-for-pay describes gay sex video male or female actors, pornographic stars, or sex workers who self-identify as heterosexual but who are paid to act or perform as homosexual professionally. Several hundred exclusively pegging films were produced, as well as twice as many bisexual and straight films with strap-on scenes. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. Transsexual people Transman pornography features lesbian hentai performers who were born female and who medically transitioned to male. The padding may also muffle noises from the outside, causing a relaxation effect and heightening their other senses. Both forms of pornography generally contains nudity. There is also some evidence that pornography can be used to treat voyeurism. 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. These scenes may involve the female actor calling for the shot to be directed at some specific part of her body. Especially popular in post-World War 2 Japanese culture. Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. 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. It like associating every Christian with the zealots who cause religious wars. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and momporn their partner. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing.