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. This type of stimulation is typically all that is required to achieve orgasm and ejaculation. 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 horny milfs others as a voyeur. Technically this is a form of exhibitionism rather than group sex per se. One-sided male nudity can also arise when a male disrobes as part of a male striptease. Yiff or Yiffy pornography features Furry or anthropomorphic animals in an erotic or sexual context. Such films continued to be produced but could only be distributed lesbian hentai by underground channels. 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. Futanari, hot gay sex Hentai females with a penis. Well-known female porn stars who expressed their pleasure in pegging their male partners include Taylor Wane, Debi Diamond, Brittany Andrews, and Monique Covét. Making a pearl necklace is one of the activities that sex workers use as safe sex alternatives for people who refuse to wear condoms. In D/S, the Dominant is the Top and the submissive is the Bottom. Kinbaku is a Japanese style of bondage or BDSM which involves tying up the bottom using simple yet visually intricate patterns, usually with several pieces of thin rope . Big Beautiful Woman is a euphemism for an overweight woman and is frequently used in the context of fat fetishism. Squirt pornography involves women ejaculating. In September 2003 the BBC reported on the new dogging craze. The fundamental principles for the exercise of BDSM require that it should be performed with the informed consent of all involved parties.