Men may find stimulation of the anus, rectum, and adjacent organs enjoyable. People may engage in anilingus for its own sake, before anal fingering or penetration, or as part of foreplay. Especially popular in post-World War 2 Japanese culture. But starting with The World Biggest Gangbang , starring Annabel Chong, the pornographic industry began producing a series of films ostensibly setting gangbang records for most consecutive sex acts hot gay sex by one person in a short period. Pornography is generally classified as either softcore or hardcore pornography. Twink pornography features younger performers, and usually features young men under 30 who identify as gay or bisexual. The name of the practice, when it is done in a repeated in-and-out motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. Ass to mouth pornography shows the transfer of a performer penis from a second performer anus to that same second performer mouth in a single shot. See Gay-for-pay. In September 2003 the BBC reported on the new dogging craze. Generally, interest differs between people, and gender depends on sexual orientation. Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented female breasts, from breast augmentation and/or use of hormones. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations . Can also include auto-fellatio, hentai movies or performing oral sex on oneself. The phrase is commonly found on porn sites. Group sex is sexual behavior involving more than two participants. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. They cited the horny milfs Internet and text messaging as common ways of organising meetings.