In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. Works in this genre may explore philosophical, political or social issues. It may occur more frequently in private situations, such as spontaneous sexual activity among three friends, or arranged in a community of like-minded swingers or planned as a once-only experience; and rarely in anonymous settings, such as at orgies or other sex parties. A 2009 study found that heterosexual male fat admirers preferred females that were clinically overweight gay fuck and rated both overweight and obese women more positively than slighter individuals. Typically features adult, masculine men with varying degrees of muscle, body fat, and body hair, akin to beefcakes, or bears. Women who adopt a lesbian identity share experiences that form an outlook similar to an ethnic identity: as homosexuals, they are unified by the heterosexist discrimination and potential rejection they face from their families, friends, and others as a result of homophobia. To avoid soreness from this resulting friction, some may prefer to use a personal lubricant, masturbation cream or saliva during masturbation. Lesbian pornography typically features a wider range of appearances and body types than is typical of mainstream pornography. In some creampie films, both gay and straight, intercourse and internal ejaculation are followed by performers licking up the semen that has dripped from their bodies. Key party A key party is a form of swinger party, in which male partners place their car and house keys into a common bowl or bag on arriving. Cheerleader pornography involves pictures of cheerleaders, both staged and real. A person may be sexually penetrated multiple times simultaneously. Unlike the usual power neutral relationships and play styles commonly hentai movies followed by couples, activities and relationships within a BDSM context are often characterized by the participants taking on complementary, but unequal roles; thus, the idea of informed consent of momsex both the partners becomes essential.