Softcore pornography generally contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore pornography may contain graphic sexual activity and visible penetration, including unsimulated sex scenes. Technically this is a form of exhibitionism rather than group sex per se. The higher pay scale and profile within a production often leads to group scenes where a straight actor only tops. Such films continued to be produced but could only be distributed by underground channels. This technique may include the big tit milf use of a simulacrum, or artificial vagina. Pornographic films are generally classified into sub-genres which describe the videos porno gay sexual fantasy which the film and actors attempt to create. In some areas, there are laws stating it is not legally possible to consent to be killed, and elsewhere it gay hentai may still be legally dubious . Real jail or prison or police station shots or videos may violate laws in some countries. Rough sex pornography is similar to pornography featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being physically violent towards them. See Gay-for-pay. A variant of this is known as ATOM or ATOGM where the insertive partner removes his penis from one recipient anus and inserts it into a second recipient mouth. Yiff or Yiffy pornography features Furry or anthropomorphic animals in an erotic or sexual context. Others involve partners who naturally have a significant difference in size. The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. It may be regarded as taboo or unnatural, and is a criminal offense in some countries, punishable by corporal or capital punishment; by contrast, people also regard anal sex as a natural and valid form of sexual activity that may be as equally fulfilling as any other desired sexual expression. The interaction between tops and bottoms—where physical or mental control of the bottom is surrendered to the top—is sometimes known as power exchange, whether in the context of an encounter or a relationship.