It is sometimes combined with BDSM features. 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. This may relate to fetishes such as voyeurism or cuckolding. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. It is commonly depicted in pornography, but very rarely in mainstream cinema. For legal reasons, the vast majority of so-called reality porn involves professional actors and actresses posing as so-called amateurs. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. Dwarfs or midget pornography features performers who are dwarfs/midgets. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. English adopts and uses hentai as a genre of pornography by the gay twinks commercial sale and marketing of explicit works under this label. Cuckold fetish pornography that involves a cuckolded husband. Depictions of male hentai sex and female masturbation are common in pornography, including gay pornography. Adult animation is genre of animation geared towards adults and sometimes teens. The range of its individual characteristics is thereby wide. Omorashi: The act of holding one own urine until the need to urinate is urgent, making another hold in their urine, or watching another person with an urgent need to urinate. As of 2013, little analysis of this paraphilia mature milfs has been reported in medical literature. It spawned numerous sequels, several of which won adult film awards. Mutual masturbation is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots.