Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. Generally, interest differs between people, and gender depends on sexual orientation. A sub-set of vaginal fisting attempts to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. People may engage horny milfs in anilingus for its own sake, before anal fingering or penetration, or as part of foreplay. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . A homosexual threesome would involve either three men or three women. Greater economic and social freedom allowed them gradually to be able to determine how they could form relationships and families. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. The person receiving anilingus is regarded gay sex video as the passive partner in the act, and the person performing anilingus is the active partner. Tentacle rape or shokushu goukan is found in some horror or hentai titles, with tentacled creatures having sexual intercourse with female characters. The term soft gay hentai crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . Female dominance refers to BDSM relationships and BDSM scenes in which the dominant partner is female. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. A male voyeur is commonly labeled Peeping Tom, a term which originates from the Lady Godiva legend. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person.