The stimulation may involve hands, fingers, everyday objects, sex toys or combinations of these. Often a dominant woman, she may be called a Dom, Domme /ˈdɒm/, Femdomme, Domina, or Dominatrix, depending on context or personal preference. In some areas, there are laws stating it is not legally possible to consent to be killed, and elsewhere it may still be legally dubious . These agreements are binding in the sense that gay sex the parties have the expectation that the negotiated rules will be followed. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. This technique may include the use of a simulacrum, or artificial vagina. Gonzo porn is influenced by amateur pornography, and it tends to use far fewer full-body/wide shots in favor of more close-ups . It spawned numerous sequels, several of which won adult film awards. 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 category also includes pornographic home movies. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. A female dominant in a master/slave relationship is often termed a Mistress, not to be confused with the colloquial usage of mistress as a kept sexual partner without a similarly formalized power relationship. One-sided male nudity can also arise when a male disrobes as part of a male striptease. Sexual scenarios may involve male domination, female submission, exhibitionism and erotic entertainment. The stigma of being gay or labeled as such has steadily eroded since the Stonewall riots began the modern American gay rights movement in 1969. The anus has a relatively high concentration of nerve endings and can be an erogenous zone, and the receiver may receive pleasure from external anal stimulation. Especially popular in post-World War 2 Japanese culture.