The term hentai gay cock is never used in this context in Japanese. Even though the performers who perform in these films typically appear on many reality websites within a short span of time, most of these websites claim that each of them is an amateur. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. A crush fetish is a fetish in which one is sexually aroused usually when someone crushes objects, food, and sometimes small animals with their body, usually under their foot, or when crushed oneself. Originating in Japan in the 1980s, the genre subsequently spread to North America and Europe, and crossed over into gay pornography. 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. The buttocks in human females thus contain more adipose tissue than in males, especially after puberty. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. There may be more than two participants; gay hentai both group sex and gang banging can be included. A somewhat controversial ejaculation big tit milf control technique is to put pressure on the perineum, about halfway between the scrotum and the anus, just before ejaculating. 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. It is sometimes described as a sexual fantasy, by women or men, depicting an exhibitionist or physique worship scenario.