Voyeur pornography may also include shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. Mutual masturbation, hentai porn mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. Creampie pornography features ejaculation inside the vagina , mouth or rectum instead of the common cum shot, followed by the visible seeping or dripping of semen from the vagina, mouth or anus. A lesbian is a female homosexual; a female who experiences romantic love or sexual attraction to other females. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. Unlike the usual power neutral relationships and play styles commonly followed by couples, activities and relationships within a BDSM context are often characterized by the participants taking on complementary, but unequal roles; thus, the idea of informed consent of both the partners becomes essential. Perhaps following the example mature milfs set by gay pornography, they have become a popular subgenre within heterosexual pornography since the turn of the century, featuring both vaginal and anal ejaculations. Point of view pornography is adult entertainment filmed to look as if the watcher were experiencing the sex act themselves. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. Studies among BDSM practitioners in the US have shown that about half of all men find the idea of bondage to be erotic; many women do as well. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Real school shots or videos which are sexualized may violate privacy laws in some countries. This is commonly hot gay sex called double vaginal penetration or double stuffing.