Terminology for roles varies widely within the various BDSM subcultures. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Mutual masturbation can be practiced by males or females in pairs or groups with or without actually touching another person as indicated by the following examples of contact versus non-contact scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching. Women that take on the roles of the giantess within this fetish often find the practice to be empowering and enjoy being worshiped. It has also been recommended as a form of foreplay or safer sex. The person receiving anilingus is regarded as the passive partner in the act, and the person performing anilingus is the active partner. Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. The Silent Duck, also called Duck-Billing, is the technique often used in which the person engaging in hand insertion shapes the hand to resemble a duck beak. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. Pornographic films present sexual gay twinks fantasies and usually include erotically stimulating material such as nudity. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Some restrict a policy of panties/nipple tape for females and some allow full nudity with explicit sexual interaction allowed. Depictions of male and female hentai movies masturbation are common in pornography, including gay pornography. Bobbi milf xxx S. Snuff pornography involves the actual death of any of the participants, consenting or otherwise, simulated death is not considered snuff. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex.