Squirt pornography involves women ejaculating. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. Twink pornography features younger performers, and usually features young men under 30 who identify as gay or bisexual. Japanese momsex rope bondage is distinguished by its use of specific katas and aesthetic rules. A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. There may be more than two participants; both group sex and gang banging can be included. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. Although pornography has usually focused on heterosexuality, gay twinks due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Reality Reality pornography refers to real or faked amateur encounters. 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 by one person in a short period. Fisting involves the insertion of one partner entire hand into a vagina or the anal cavity. 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. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Real enema shots or videos of true medical situations may violate privacy laws in some countries. Bobbi S. When sexual activity is centered on one of the threesome, then the activity hentai videos may be described as a gang bang of the person. Actual spying may violate privacy and/or trespassing laws in many countries. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological usage of both terms.