No causal relationship is known between masturbation and any form of mental or physical disorder. Irrespective of the legal or social view of pornography, hot gay sex it has been used in a number of contexts. Such ejaculation can be done by mammary intercourse, or masturbation over the other person, or result from the withdrawal of the penis from a partner mouth as he is ejaculating following fellatio, irrumatio, or intercourse. Certain websites have begun providing bondage videos and photographs featuring the kidnapping roleplay, which has been largely the hallmark of detective style bondage magazines. The volume of semen that is ejaculated depends on several factors, including the male health, age, degree of sexual excitement, and the time since his last ejaculation. Exhibitionism: Becoming noticeably desperate or wetting oneself with the express purpose of being seen by strangers. Typically featured are hitting, choking, name-calling and hentai videos hair-pulling. Boots are seen as the perhaps most fetishistic of all footwear and boots may be the most popular fetish clothing attire. Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women. Point of view pornography is adult entertainment filmed to look as if the watcher were experiencing the sex act themselves. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals in addition to traditional heterosexual roles. Women with women Main article: Lesbianism lesbian milfs in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience.