The term sadomasochism is derived from the words sadism and masochism . Bukkake is a sex act portrayed in pornographic films, in which several men ejaculate on a woman, or another man. Other 3d hentai objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. Reality and voyeur pornography, animated videos, and legally prohibited acts also influence the classification of pornography. Pussing: British expression for an activity involving a consenting couple where the male partner watches the woman urinate otherwise undetected in a semi-public place, usually a toilet cubicle at a pub, hotel, restaurant, theatre/cinema, office, club etc. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Women that take on the roles of the giantess within this fetish often find the practice to be empowering and enjoy being worshiped. Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, film, video, and video games. When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. Starting with erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct momporn subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic anime . Among swinging couples, one of the two partners is often the driving force and the other gay twinks is more passive-supportive of the addition of additional sex parties.