SV Borsch 1925 in Partners can engage in penetrative sex, known as full swap, or choose to soft swap in which they engage only in non-penetrative sex. Consent is the most important criterion here. Often a dominant woman, she may be called a Dom, Domme /dam/, Femdomme, Domina, or Dominatrix, depending on context or personal preference. There is also some evidence that pornography can be used to treat voyeurism. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. The 1979 U. The Japanese sex industry cheap viagra uses the term Paizuri . Buck Angel is the best-known actor in this genre. Enema pornography involves adults given enemas to others, often fake. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. Given the wide range of practices, some of which may be engaged in by people who do not consider themselves as practicing BDSM, inclusion in the BDSM community or subculture is usually dependent on self-identification and shared experience. Teacher and Student or Boss and Secretary pornography involves sexualized situations which take place between an authority figure, such as a teacher or boss, and an underling, such as a student or secretary, often fake. Boot fetishism is a sexual fetish dedicated to boots. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. 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. 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.