The essence of voyeurism is the observing but may also involve the making of a secret photograph or video of the subject during an intimate activity. The effect is to give the viewer the sense that they are experiencing the sex acts that they are watching, as opposed to simply watching others as a voyeur. Insertion in pornography features women inserting various odd objects into their anus or vaginas. Spanking or whipping pornography involves spanking or whipping, generally of the buttocks, with the hand or with other objects such as belts, switches, paddles, brushes, or whips. They cited the Internet and text messaging as common ways of organising meetings. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques. Fisting may be performed with or without a porn milf partner. Typically features a feminine Uke, or submissive, and a masculine Seme, or dominative. Squirt pornography videos porno gay involves women ejaculating. The anal and rectal tissues are delicate and do not provide natural lubrication, so they can easily tear and permit disease transmission, especially if lubricant is not used. One-sided male nudity can also arise when a male disrobes as part of a male striptease. Since at least 1973, it has also been used to refer to a sexually attractive young woman. For their consent, they must have relevant information at hand and the necessary mental capacity to judge. Futanari, Hentai females with a penis. Men and women may masturbate until they are close to orgasm, stop for a while to reduce excitement, and then resume masturbating. Targets the male audience, but is much less popular than Yaoi. It is also often mixed with other fetishes in practice, such as voyeurism, denial, etc. Along with the penis, the scrotum is sensitive and considered hentai sex to be an erogenous zone. These typically are leaked to the public via the Internet, with or without the celebrity consent. Common phrases used to refer to these individuals are chicks with dicks, trannies, or shemales, although these are generally considered pejorative slurs among transwomen.