By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. Animal lesbian milfs masturbation has been observed in many species, both in the wild and in captivity. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. Targets the male audience, but is much less popular than Yaoi. It may be regarded as taboo or unnatural, and is a criminal offense in some countries, punishable by corporal or capital punishment; by contrast, people also regard anal sex as a natural and valid form of sexual activity that may be as equally fulfilling as any other desired sexual expression. 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. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. Lesbian pornography made for women is usually made by women, and usually videos gays features women who identify as lesbian or bisexual. It may also involve touching, rubbing, or pinching the nipples or other erogenous zones while masturbating. It is mutual consent that makes a clear legal and ethical distinction between BDSM and hentai movies such crimes as sexual assault or domestic violence. The buttocks in human females thus contain more adipose tissue than in males, especially after puberty. Since development and pronunciation of the buttocks begins at menarche and declines with age, full buttocks are also a symbol of youth. There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959.