Sadism describes sexual pleasure derived by inflicting pain, degradation, humiliation on another person or causing another person to suffer. 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, gay cock feather duster or belt. These styles are much closer to the style of bondage scenes in mainstream television. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. Concerted deployed sexual rejection exercised on the partner can be an aspect of Dominance and Submission as well. Most bisexual porn is made by small production companies rather than the major studios. Erotic spankings are commonly combined with other forms of sexual foreplay. A study anime hentai of the condom usage habits of New Zealand sex workers said that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom. Gay pornography is the representation big tit milf of sexual activity between males. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. Gonzo pornography is a style of pornographic film that attempts to place the viewer directly into the scene. 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. However, various groups within society considered such depictions immoral, labelling them pornographic, and attempting to have them suppressed under obscenity laws, with varying degrees of success.