Both forms of pornography generally contains nudity. Celebrity sex tapes are amateur or professionally-made hentai movies recordings of sex acts, as performed by a celebrity and their partner. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum of heterosexual, homosexual, momporn and transgender sexual acts in addition to unique fetishes and philias. The genres of pornography are based on the type of activity featured and the category of participants, for example mateur pornography is a category of pornography that features models, actors or non-professionals performing without pay, or actors for whom this material is their only paid modeling work. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual intercourse as performed in ordinary life; they have been called the counterimage of facials. 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. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction. This technique may include the use of a simulacrum, or artificial vagina. The gay twink porn padding may also muffle noises from the outside, causing a relaxation effect and heightening their other senses. Sometimes special furniture is used, such as a queening stool or smotherbox. Omorashi: The act of holding one own urine until the need to urinate is urgent, making another hold in their urine, or watching another person with an urgent need to urinate. The rise of the Internet in the late 1990s and early 2000s similarly changed the way pornography film was distributed and furthermore complicated the censorship regimes around the world and the legal prosecution of obscenity.