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 gay movies to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. In human sexuality, a threesome is sexual activity that involves three people at the same time. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects. 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. Lesbian pornography lesbian hentai made for women is usually made by women, and usually features women who identify as lesbian or bisexual. This can, however, redirect semen into the bladder . In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. The scenario is a genre of erotica, which on the internet is sometimes abbreviated to CMNF, and may involve sexual and nonsexual erotic scenarios. There may be more than two participants; both group sex and gang banging can be included. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. 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 naked milf of contact versus non-contact scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching.