The consensual submission of the submissive is sometimes demonstrated to others by symbols indicating his/her belonging to the dominant, such as wearing a collar, special tattoos, piercings, a very short haircut or a bald head. Yaoi male homosexual hentai designed to appeal to women and men. 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 the behavior, sexual urges, or fantasies cause clinically significant distress or impairment in social, occupational, or other important areas of functioning. In some creampie films, both gay and straight, intercourse and internal ejaculation are followed by performers licking up the semen that has dripped from their bodies. Reading or viewing pornography, lesbian milfs sexual fantasy or other erotic stimuli may lead to a desire for sexual release such as by masturbation. Studies have found that masturbation is frequent in humans of both sexes and all ages, although there is variation. There are varieties of definition and geographical data presented gay hentai by organizations and individuals for classifying the Asian people. Some men enjoy masturbating during pegging. Many transgender people regard the term shemale as offensive, arguing that it mocks or shows a lack of respect towards the gender identity and gender expression of transgender individuals; in this view, the term emphasizes the biological sex of a person and neglects their gender. Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra , a practice known as urethral play or sounding. People may also find masturbating with friends helps lift the stigma they feel surrounding the act. The most successful animated features produced in the United States primarily gay twinks for adult audiences were directed by Ralph Bakshi, including Fritz the Cat, Heavy Traffic and Coonskin.