People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves . The introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. In the Diagnostic and Statistical Manual of Mental Disorders , published by the American Psychiatric Association, it is classified under 302.89 – Paraphilia NOS and has no diagnostic criteria other than a general statement about paraphilias that says the diagnosis is made if naked milf the behavior, sexual urges, or fantasies cause clinically significant distress or impairment in social, occupational, or other important areas of functioning. Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra , a practice known as urethral play or sounding. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. These are often fake. Production of such films was profitable, and a number of producers specialised in their production. The term comes from the French voyeur, one who looks. Crush pornography features objects anime hentai being crushed by an actress or actor, who generally plays an overtly dominant role. Other fetish Bareback pornography features young gay porn performers who are not wearing condoms. Following World War II, during a period of social repression when governments actively persecuted homosexuals, women developed networks to socialize with and educate each other. Bear features a combination of middle-aged, hairy or overweight males. In the 18th and 19th centuries, some European theologians and physicians described it as heinous, deplorable, and hideous, but during the 20th century, these taboos generally declined.