The fantasy is typically based videos porno gay around porn milf one or more larger beings dominating a smaller being. Reading or viewing pornography, sexual fantasy or other erotic stimuli may lead to a desire for sexual release such as by masturbation. The precise definition of roles and self-identification is a common subject of debate, reflection, and discussion within the community. 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. Some anthropologists lesbian hentai 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 introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. By comparison, gonzo pornography puts the camera right into the action, often with one or more of the participants both filming and performing sexual acts, without the usual separation between camera and performers seen in conventional porn and cinema. Cartoon pornography depicts illustrated or animated fictional characters in erotic and sexual situations. It is the most common form of sexual fetishism for otherwise non-sexual objects or body parts. Coprophilia , also called scatophilia or scat , is the paraphilia involving sexual arousal and pleasure from feces. Works in this genre may explore philosophical, political or social issues. Some prefer a particular type of clothing to urinate. Threesome or 3some pornography features one man and two women . While wearing diapers, a diaper fetishist generally experiences a comforting feeling. A related term used in the genre is the term cougar, which implies an older woman as predator. A heterosexual threesome may involve two men and a woman, or one man and two women - that is, two men having sex with a woman , or two women with a man. Most bisexual porn is made by small production companies rather than the major studios.