The first film was released in 1980 starring Kay Parker. It may involve sexual attraction to women who are pregnant or appear pregnant, attraction to lactation, or attraction to particular stages of pregnancy such as impregnation or childbirth. Pornographic films present sexual fantasies and usually include erotically stimulating material such as nudity. Male masturbation may differ between males who have been circumcised and those who have not. Such films continued to be produced but could only be distributed videos gay by underground channels. Sex experts have praised various techniques that the performer can use during fellatio to increase their partner pleasure. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. They cited the Internet and text messaging as common ways of organising meetings. With second wave feminism and growth of scholarship in women history and sexuality in the 20th century, the definition of lesbian broadened, sparking a debate about sexual desire as the major component to define what a lesbian is. Interracial pornography typically employs ethnic and racial stereotypes in its depiction of performers and many of interracial pornographic films still include racial stereotypes, although the segregation of actors by race has diminished considerably. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction. Bukkake pornography usually depicts numerous men having sex with one woman, with multiple, usually 10 or more, men ejaculating on the female face. Sub-genres of Japanese porn Among the various sub-genres of Japanese pornography are the following: Lolicon ロリコン: This genre involves prepubescent and adolescent girls between the aged of 6-12.