While most tentacle erotica is animated, there are also a few live-action movies. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques. A pearl necklace is a slang term referring to a sexual act in which a man ejaculates semen on or near the neck, chest, or breast of another person. A sexual fetish may be regarded as an enhancing element to a romantic/sexual relationship achieved in ordinary ways or as a mental disorder/disorder of sexual preference if it causes significant psychosocial distress for the person or has detrimental effects on important areas of their life. Such films continued to be produced but could only be distributed by underground channels. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. A common way that these are depicted in a single scene is with one woman and two men performing together. For other diaper fetishists, simply wearing a diaper, the bulking feeling and crinkling sounds associated with it, is enough to cause the fetishist a form of erotic pleasure or sexual arousal. Sometimes special furniture is used, such as a queening stool or smotherbox. Gonzo porn is influenced by amateur pornography, and it tends to use far fewer full-body/wide shots in favor of more close-ups . Making a pearl necklace is one of the activities that sex workers use as safe sex alternatives for people who refuse to wear condoms. 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. It is also often mixed with other fetishes in practice, such as voyeurism, gay hentai denial, etc. Some restrict a policy of panties/nipple tape for females and some allow full nudity with explicit sexual interaction allowed. It may be used as foreplay, or milf xxx as an alternative to sexual penetration. Fistees who are more experienced may take two fists gay movies . Arguably the most famous example of the genre is the Taboo series.