Central to the typical MILF narrative is an age-play dynamic of older women and younger lovers. BDSM pornography depicts bondage and discipline, domination and submission, sadism and masochism. Fat fetishism also incorporates stuffing and padding, whereas the focus of arousal is on the sensations and properties of a real or simulated gain. Pornographic films or sex films are films that present sexually explicit subject matter for the purpose of sexual arousal and erotic satisfaction of the viewer. The legal status of masturbation has also varied through history and masturbation in public is illegal in most countries. The Japanese sex industry uses the term Paizuri milf fuck . Foot fetishism, foot partialism, foot worship, or podophilia is a pronounced 3d hentai sexual interest in feet. Clothed female, naked male is a genre of erotica featuring one or more nude men and one or more clothed women. One is in a vertical side of the box for the neck of the person who has their head inside the smotherbox. Kinbaku is a Japanese style of bondage or BDSM which involves tying up the bottom using simple yet visually intricate patterns, usually with several pieces of gay twinks thin rope . Exhibitionist pornography features performers, usually female exposing themselves in public and spans simple flashing to public sex. Spanking or whipping pornography involves spanking or whipping, generally of the buttocks, with the hand or with other objects such as belts, switches, paddles, brushes, or whips. Bukkake pornography usually depicts numerous men having sex with one woman, with multiple, usually 10 or more, men ejaculating on the female face. The surfacing of sex tapes has become so common that some are leaked as a marketing tool to advance or establish a media career. The films were financially successful, winning AVN Awards for the best selling pornographic films of their year; however the events were effectively un-officiated and the record breaking claims often misleading. They cited the Internet and text messaging as common ways of organising meetings.