Teacher and Student or Boss and Secretary pornography involves sexualized situations which take place between an authority figure, such as a teacher or boss, and an underling, such as a student or secretary, often fake. The first film was released in 1980 starring Kay Parker. Squirt pornography involves women ejaculating. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. One-sided male nudity can also arise when a male disrobes as part of a male striptease. But starting with The World Biggest Gangbang , starring Annabel mature milfs Chong, the pornographic naked celebrities industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts by one person in a short period. This technique may include the use of a simulacrum, or artificial vagina. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize hentai movies or associate nouns with female homosexuality or same-sex attraction. Such films continued to be produced but could only be distributed by black gay underground channels. Boot fetishism is a sexual fetish dedicated to boots. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. The terms can be complimentary or pejorative. Others may also use vibrators and other sexual devices more commonly associated with female masturbation. However, the tradition of bondage magazines continues in the form of art books of videos gays bondage photographs, published by ma animated porn instream publishers such as Taschen. Central to the typical MILF narrative is an age-play dynamic of older women and younger lovers. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. In some areas, there are laws stating it is not legally possible to consent to be killed, and elsewhere it may still be legally dubious . Mutual masturbation is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands.