Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum of heterosexual, homosexual, and transgender sexual acts in addition to unique fetishes and philias. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio. Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, gay boy porn sculpture, drawing, painting, animation, sound recording, film, video, and video games. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. These scenes may involve the female actor calling momsex for the shot to be directed at some specific part of her body. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. Female dominance refers to BDSM relationships and BDSM scenes in which the dominant partner is female. A somewhat controversial ejaculation control technique is to put pressure on the perineum, about halfway between the scrotum and the anus, just before ejaculating. Often, strong views are expressed with regard to anal sex; it is controversial in various cultures, especially with regard to religion, commonly due to prohibitions against anal sex among gay men or teachings about 3d hentai the procreative purpose of sexual activity. The person receiving anilingus is regarded as the passive partner in the act, and the person performing anilingus is the active partner.