In male homosexual pornography, Treasure Island Media is a notable representative, its title Breed Me having been noted as one of the earliest and most notorious in the genre. The legal status of masturbation has also varied through history and masturbation in public is hentai movies illegal in most countries. Bondage can also be achieved by spreading the appendages and fastening them with chains to a St. In the 1920s, Havelock Ellis reported that turn-of-the-century seamstresses using treadle-operated sewing machines could achieve orgasm by sitting near the edge of their chairs. Although macrophilia literally translates to simply a lover of large, in the context of a sexual fantasy it is used to mean someone who attracted to beings larger than themselves. Transwomen are most often featured with male partners, but are also featured with other transsexuals or cissexual women. With second wave feminism and growth of scholarship in women history and sexuality in the 20th century, the definition of lesbian broadened, sparking a debate about sexual desire as the major component to define what a lesbian is. Facesitting is common among dominant and submissive individuals, for demonstrating superiority gaysex and for sexual gratification. A threesome is a form of group sex, but involving only three people. It can also be heightened by the person saying porn milf that they have to urinate. Jail/Prison/Police pornography involves people in police custody or inmates in jails or prisons in various sexual situations, such as strip searches or body cavity searches. Exhibitionist pornography features performers, usually female exposing themselves in public and spans simple flashing to public sex. Female-to-male strap-on pornography became a popular sub-genre in the United States in the early 21st century, with a number of studios producing dedicated series about it. Anti-pornography psychologist Ana Bridges and colleagues conducted a content analysis of best-selling heterosexual pornographic videos showing that over 96% of all scenes concluded with a male performer ejaculating onto the body of his female partner.