When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. The niche popularity grew significantly in the latter half of the first decade of the 2000s. Macrophilia is a fascination hentai sex with or a sexual videos porno gay fantasy involving giants, more commonly expressed as giantesses . Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. Diaper fetishism is totally independent from pedophilia as the wearer derives pleasure only from the diaper and/or use of it. 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. Mutual masturbation, mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. 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. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. Reality pornography is a genre of pornography where staged scenes, usually shot in cinéma vérité fashion, set up and precede sexual encounters. Group sex most commonly takes place in a private sex party or semi-public swinger gathering, but may also take place at massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as sex clubs. Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. Crush pornography features objects being crushed by an actress or actor, who generally plays an overtly dominant role. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. Lolita pornography caters momporn to ephebophiles. The resulting consent and understanding is occasionally summarized in a written contract, which is an agreement of what can and cannot take place.