Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. The term comes from the French voyeur, one who looks. The introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. The preference could be barefoot, high-heels, flip flops, and so on, depending on the fetishist. The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. The term bondage describes the practice of Physical restraining. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. It has since become popular enough with couples to be discussed during an episode of Sex and the City. At the end of the evening the female partners would randomly select keys from the bowl and leave with that key owner. This makes varying degrees of stimulation an integral part of oral sex for many men. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with porno gay either partner being the receiver and the giver. 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. Top and dominant are widely recognized for those partner in the relationship or activity who are, respectively, the physically active or controlling participants. 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.