Individuals who can change between top/dominant and bottom/submissive roles—whether from relationship to relationship or within a 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. 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 interaction between tops and bottoms—where physical or mental control of the bottom is surrendered to the top—is sometimes known as power exchange, whether in the context of an encounter or a relationship. Pornography is generally classified as either softcore or hardcore pornography. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. Unlike the traditional hentai sex definition of the momsex term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes masochistic sexual pleasure in it. The gay boy porn most common depiction of a hermaphrodite is a person with a female face, breasts, and build, and a penis , although there are other combinations. Going back at least as far as the Christy twins in the 1970s, depictions of incest and particularly incest between twins has been a feature of gay pornography. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. It can be combined with fellatio and the woman may move her breasts up and down on the penis for an additional stimulation, usually before the man reaches orgasm. Others may also use vibrators and other sexual devices more commonly associated with female masturbation. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. The higher pay scale and profile within a production often leads to group scenes where a straight actor only tops.
