Consent is the most important criterion here. Rough sex pornography is similar to pornography gay boy porn featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being physically violent towards them. 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. In many cases, that person is also aroused by smelling body parts that have a urine scent. In these cases, the appearance of an enlarged abdomen caused by obesity or overeating may be sufficient, or simply the suggestion of a protruding navel. Softcore pornography generally contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore pornography may contain graphic sexual activity and visible penetration, including unsimulated sex scenes. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore film, in which the male actor ejaculates in a way ensuring maximum hentai videos visibility of the act itself. This yields a view that would not be obtainable directly through the eyes of a person while experiencing the sex act. 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. Squirt pornography involves women ejaculating. Am Abend , one of the earliest pornographic films that have been collected at the Kinsey Institute for Research in Sex, Gender, and Reproduction, starts with a female masturbation scene. Enema pornography involves adults given enemas to others, often fake. As observation is encouraged, voyeurism and exhibitionism are closely associated with dogging. Not all crush lesbian milfs fetishists are that extreme! This is commonly called double anal or double stuffing.