Insertion in pornography features women inserting various odd objects into their anus or vaginas. Bondage is usually, but not always, a sexual practice. This is commonly called double anal or double stuffing. Fetish cuckolding can have a wide range of expression, from pillow-talk fantasy between monogamous partners to extreme alternative lifestyles, depending on the couple. The fundamental principles for the exercise of gay sex video BDSM require that it should be performed with the informed consent of all involved parties. Fisting may be performed with or without a partner. Yiff or Yiffy pornography features Furry or anthropomorphic animals in an erotic or sexual context. Gaping in pornography refers to scenes of anal sex with a focus on the recipient’s anus remaining open for a period of time after the erect penis or dildo is removed. One or more of the participants may engage in autoerotic sexual activity, such as masturbation, possibly without physical contact with the other participants. Common phrases used to refer to these individuals are chicks with dicks, trannies, or shemales, although these are generally considered pejorative slurs among transwomen. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or anus and rectum, for sexual pleasure. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. The higher pay scale and profile within a production often leads to group scenes where a straight actor only tops. Some productions momsex are noted for sophisticated and/or experimental hentai videos storytelling and animation techniques. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity. Accepting that Eros is not always pretty, and may involve the forbidden or taboo - as with women pornography – forms part of the struggle with the good girl/bad girl or virgin-whore split in postmodern femininity. Often, slave contracts are set out in writing to record the formal consent of the parties to the power exchange, stating their common vision of the relationship dynamic.