Tentacle rape or shokushu goukan is found in some horror or hentai momsex titles, with tentacled creatures having sexual intercourse with female characters. Pleasure for the giver during anilingus is usually based more on the principle of the act. Generally, interest differs between people, and gender depends on sexual orientation. Freud, however, considered such extensions of sexual interest to fall within the range of the normal, unless marked out by exclusivity . 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 hentai movies 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. However the genre remains a very small proportion of the pornographic DVD market; for example at porn retailer HotMovies. Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented female breasts, from breast augmentation and/or use of hormones. Since at least 1973, it has also been used to refer to a sexually attractive young woman. The Japanese sex industry uses the term Paizuri . By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. 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. Japanese young gay porn rope bondage is distinguished by its use of specific katas and aesthetic rules. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or anus and rectum, for sexual pleasure. In many cases, that person is also aroused by smelling body parts that have a urine scent.