Transsexual pornography is a genre of pornography. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. It is sometimes gay movies combined with BDSM features. Reality pornography is professionally made porn which seeks to emulate the style of amateur pornography. Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, gay hentai sound recording, film, video, and video games. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. A pornographic work is characterized as hardcore if it has any hardcore content, no matter how small. The definition clash also appears with the English definition of yuri as any lesbian relationship, as opposed to its sexually explicit definition in Japan. Some techniques which may work for one individual can be difficult or uncomfortable for another. Animal masturbation has been observed in many species, both in the wild and in captivity. Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating the man anus with a strap-on dildo. Mutual masturbation can be practiced by males or females in pairs or groups with or without actually touching another person as indicated by the following examples of contact versus non-contact scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching. Many cultures describe pain as an aphrodisiac. The current record is held by Lisa Sparks who had sex with 919 men on October 16, 2004 in Warsaw, Poland as part of the Third Annual World Gangbang Championship and Eroticon 2004. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. A sex lesbian milfs party is a gathering at which sexual activity takes place.