Ass to mouth pornography shows the transfer of a performer penis from a second performer anus to that same second performer mouth in a single shot. For legal reasons, the vast majority of so-called reality porn involves professional actors and actresses posing as so-called amateurs. Such ejaculation can be done by mammary intercourse, or masturbation over the other person, or result from the withdrawal of the penis from a partner mouth as he is ejaculating following fellatio, irrumatio, or intercourse. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. The term is typically used by the cinematographer big tit milf within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. Sexologist Alfred Kind suggested gay movies that the buttocks is the primary sexual presentation site in primates. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Bukkake is a sex act portrayed in pornographic films, in which several men ejaculate on a woman, or another man. Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. Lolita pornography features women who are 18 years old or slightly older, who pretend to be underage teen girls. Compensating elements of the total dominance and submission are care and devotion complementing one another, thus facilitating stable relationships. Clothes wetting: The person is sexually aroused by wetting one clothing or observing another person doing so. The term Asiaphile is sometimes used to describe the same phenomenon as is yellow lesbian hentai fever .