A person may be sexually penetrated multiple times simultaneously. This genre also features male-on-male fellatio through a small hole made in a bathroom divider. A spanking may be carried out with the use of a bare or gloved hand, or with any of a variety of implements, including a paddle, strap, hairbrush, feather duster or belt. The study also found that participants reacted positively to a much wider range of figures than a control group, even rating emaciated figures higher. Creampie pornography features ejaculation inside the vagina , mouth or rectum instead of the common cum shot, followed by the visible seeping or dripping of semen from the vagina, mouth or anus. Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back young gay porn to the 1930s; while a more jocular equivalent is a trip down mammary lane. These styles are much closer to the style of bondage scenes in mainstream television. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s momporn has become a leitmotif of the hardcore genre. His most famous model was Bettie Page, who became the first celebrity hentai movies of bondage film and photography. Voyeur pornography may also include shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. In general, as compared to conventional relationships, BDSM participants go to great lengths to negotiate the important aspects of their relationships in advance, and to take great care in learning about and following safe practices. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Ass to mouth is a slang term primarily used to describe the withdrawal of a penis from the receptive partner anus followed by the immediate insertion into the receptive partner mouth.