Emetophilia pornography involving vomiting and gagging. But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. A female dominant in a master/slave relationship is often termed a Mistress, not to be confused with the colloquial usage of mistress as a kept sexual partner without a similarly formalized power relationship. Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating the man anus with a strap-on dildo. Reality Reality pornography refers to real or faked amateur encounters. See Gay-for-pay. Targets the male audience, but is much less popular than Yaoi. Can also include auto-fellatio, or performing oral sex on oneself. Reality pornography is professionally made porn which seeks to emulate the style of amateur pornography. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. As a result, little in history was gay black porn documented to give an accurate description of how female homosexuality is expressed. Interracial pornography typically employs ethnic and racial stereotypes in its depiction of performers and many of interracial pornographic films still include racial stereotypes, although the segregation of actors by race has diminished considerably. Some women who engage in same-sex sexual activity may reject not only identifying as lesbians but as bisexual as well, while other women self-identification as lesbian may not align with their sexual orientation or sexual behavior; sexual identity is not necessarily the same as one sexual orientation or sexual behavior, due to various reasons, such as the fear of identifying their sexual orientation in a homophobic setting. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive.