Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist. In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations lesbian milfs , government agencies, and political organizations. Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions. Voyeur pornography may also include shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. Bestiality is illegal in many countries. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. It is typically animated pornography, as the legal age to be featured in a pornographic film in Japan is 18. The actual height of the giantess within the fantasy may vary depending on the individual. If dramatic skills are not involved, a performer in a porn film may also be called a model. In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. The niche popularity grew significantly in the latter half of the first decade of the 2000s. Use of the agreed safeword is seen by some as an explicit withdrawal of hentai videos consent. This is commonly hot gay sex called double vaginal penetration or double stuffing.