Arousal may be triggered by seeing the body movements or facial expressions of that person. Insertion in pornography features women inserting various odd objects into their anus or vaginas. Unlike erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. In general, softcore pornography is momsex pornography that does not depict explicit sexual activity, sexual penetration or extreme fetishism. It may also involve touching, rubbing, or pinching the nipples or other erogenous zones while masturbating. The anus has a relatively high concentration of nerve endings and can be an erogenous zone, and the receiver may receive pleasure from external anal stimulation. Some couples use pornography at times for variety and to create a sexual interest or as part of foreplay. Freud, however, considered such extensions of sexual interest to fall within the range of the normal, unless marked out by exclusivity . It generally contains nudity or partial nudity in sexually suggestive situations. Along with the penis, the scrotum is sensitive and considered to be an erogenous zone. This technique may include the use of a simulacrum, or artificial vagina. The terms can hentai movies be complimentary or pejorative. Voyeur or peeping Tom pornography is usually more staged with the subjects aware of the cameras, sometimes openly including this exhibitionist awareness. Jail/Prison/Police pornography involves people in police custody or inmates in jails or prisons in various sexual situations, such as strip searches or body cavity searches. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. In many cases, that person is also aroused by smelling body parts that have a urine scent. While bondage is a very popular variation within the larger field of BDSM, it is nevertheless sometimes differentiated from the rest of this field. Human urinal: An act common in the bondage sex community where a male or female slave will serve as a urinal for a dominant hot gay sex partner.