This category also includes pornographic home movies. Examples of heterosexual pornographic film series featuring creampies include Cream Filled Teens and Internal Cumbustion. This industry employs thousands of performers along with support and production staff. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. Pornography is often referred to as porn and a pornographic work as a porno. Kinbaku means tight binding Kinbaku-bi which literally gay twink porn means the beauty of tight binding. Simultaneous penetration hentai movies of the mouth and either the vagina or anus. Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented female breasts, from breast augmentation and/or use of hormones. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. The term Asiaphile is sometimes used to describe the same phenomenon as is yellow fever . 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. 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. Bareback sex is physical sexual activity, especially sexual penetration, naked milf without the use of a condom. Bhabha, Anne McClintock and Kobena Mercer. Actual upskirt or downblouse shots may violate privacy laws in some countries. English adopts and uses hentai as a genre of pornography by the commercial sale and marketing of explicit works under this label. Incest pornography can feature actual relatives, but the main type of this pornography simply uses actors of similar looks to suggest family relationship. Targets the male audience, but is much less popular than Yaoi. Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903.