Today, religions vary in their views of masturbation; some view it as a spiritually detrimental practice, some see it as not spiritually detrimental, and others take a situational view. Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra , a practice known as urethral play or sounding. Rubber pornography involves rubber, latex, and similar materials. Whether or not licking and fondling is considered tea bagging was once debated on the Howard Stern Show. Sadomasochism refers to the aspects of BDSM surrounding the exchange of physical or emotional pain. Lying face down one may use the hands, one may straddle a pillow, the corner or edge of the bed, a partner leg or some scrunched-up clothing and hump the vulva and clitoris against it. The term BDSM dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. On the other hand, hentai videos the masochist enjoys being gay boy porn hurt, humiliated, or suffering within the consensual scenario. The cover can have hinges or be a separate part. Today, pornographic films can be sold or rented on DVD, shown through Internet and special channels and pay-per-view on cable and satellite, and in adult theaters. Some anthropologists and sociobiologists believe that breast fetishism derives from the breasts similarity to buttocks, but instead provide sexual attraction from the front of the body. The Girls Gone Wild series is one example. The primary subjects of pornographic depictions are pornographic models, who pose for still photographs, lesbian milfs and pornographic actors or porn stars, who perform in pornographic films. Boots are seen as the perhaps most fetishistic of all footwear and boots may be the most popular fetish clothing attire.