The actual height of the giantess within the fantasy may vary depending on the individual. The term has origins in the Greek language . If one person is penetrated by two objects, it is generically called double penetration . It is the nude milfs most common form of sexual fetishism for otherwise non-sexual objects or body parts. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. Creampie pornography features ejaculation hentai porn inside the vagina , mouth or rectum instead of the common cum shot, followed by the visible seeping or dripping of semen from the vagina, mouth or anus. Crush pornography features objects being crushed by an actress or actor, who generally plays an overtly dominant role. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. The industry generally refers to such films as adult films, which is part of adult entertainment. Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . This type of pornography is almost exclusively hentai, as true hermaphroditic humans young gay porn are not fertile and are not usually found in nature. Snowballing or snowdropping is the human sexual practice in which one person takes someone else semen into his or her mouth and then passes it to the mouth of the other, usually through kissing. A study of the condom usage habits of New Zealand sex workers said that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom. Concerted deployed sexual rejection exercised on the partner can be an aspect of Dominance and Submission as well. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. A scene where many women have sex with one man is referred to as a reverse gang-bang. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12.