Studies among BDSM practitioners in the US have shown that about half of all men find the idea of bondage to be erotic; many women do as well. Shotacon : Similar to Lolicon, this genre involves prepubescent gay hentai or under-aged boys between the ages 6–12. A person may be sexually penetrated multiple times simultaneously. Boots are seen as the perhaps most fetishistic of all footwear and boots may be the most popular fetish clothing attire. Typically features adult, masculine men with varying degrees of muscle, body fat, and body hair, akin to beefcakes, or bears. Top and dominant are widely recognized for those partner in the relationship or activity who are, respectively, the physically active or controlling participants. 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, nude milfs friends, and others as a result of homophobia. A 2009 study found that heterosexual male fat admirers preferred females that were clinically overweight and rated both overweight and obese women more positively than slighter individuals. In some creampie films, both gay and straight, intercourse and internal ejaculation are followed young gay porn by performers licking up the semen that has dripped from their bodies. Bra pornography involves women or men dressed in bras. A spanking may be carried out with the use of a bare or gloved hand, or with any of a variety of implements, including a paddle, strap, hairbrush, feather duster or belt. Some may pursue fantasies that are concerned with the circumstances in which a subject may give birth, or to the conditions to which the pregnant subject may find themselves acting upon, such as approaches to mobility, sleeping, and dressing. As well as traditional attraction, the topic also incorporates feederism and gaining, where sexual gratification is obtained via the process of gaining body fat. Perhaps following the example set by gay pornography, they have become a popular subgenre within heterosexual pornography since the turn of the century, featuring both vaginal and anal ejaculations.