The term soft 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 . Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. Bukkake, Gokkun, Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or hentai porn anus and rectum, momporn for sexual pleasure. Tentacle rape or shokushu goukan is found in some horror or hentai titles, with tentacled creatures having sexual intercourse with female characters. High videos porno gay heel pornography involves women or men dressed in high heeled shoes. It spawned numerous sequels, several of which won adult film awards. Clothed female, naked male is a genre of erotica featuring one or more nude men and one or more clothed women. The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. These agreements are binding in the sense that the parties have the expectation that the negotiated rules will be followed. 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. Greater economic and social freedom allowed them gradually to be able to determine how they could form relationships and families. Especially popular in post-World War 2 Japanese culture. Sexual scenarios may involve male domination, female submission, exhibitionism and erotic entertainment.