Arousal may be triggered by seeing the body movements or facial expressions of that person. Individuals who can change between top/dominant and bottom/submissive roles—whether from relationship to relationship or within gay cock a hentai movies given relationship—are known as switches, though the term switch in this context is occasionally seen as derogatory and is rejected by many who might simplistically fit the definition. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity. Accepting that Eros is not always pretty, and may involve the forbidden or taboo - as with women pornography – forms part of the struggle with the good girl/bad girl or virgin-whore split in postmodern femininity. Seconds after being deposited onto the face, the semen thickens, before liquefying 15–30 minutes later. Anal sex is considered a high-risk sexual practice because of the vulnerability of the anus and rectum. Instead, lesbian relationships have often been regarded as harmless and incomparable to heterosexual ones unless the participants attempted to assert privileges traditionally enjoyed by men. However, sex researchers and adolescent health care professionals have found no evidence for the existence of rainbow parties, and as such attribute the spread of the stories to a moral panic. Solo pornography features performers masturbating. In places where non-monogamous sex is taboo or illegal, group sex may take place in private or clandestine locations including homes, hotel rooms, or private clubs. The term has as its origins Frantz Fanon epidermal schema and Edward Said Orientalism. The films were financially successful, winning AVN Awards for the best selling momsex pornographic films of their year; however the events were effectively un-officiated and the record breaking claims often misleading.