The niche popularity grew significantly in the latter half of the first decade of the 2000s. Lolicon and its contribution to the controversy regarding the regulation of pornography of depicting minors that don’t exist has been a major issue for free speech in and outside of Japan. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. The Silent Duck, also called Duck-Billing, is the technique often used in which the person engaging in hand insertion shapes the hand to resemble naked milf a duck beak. The volume of semen that is ejaculated depends on several factors, including the male health, age, degree of sexual excitement, and the time since his last ejaculation. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. Boots are seen as the perhaps most fetishistic of all footwear and boots may be the most popular fetish clothing attire. Women oriented pornography anime hentai is sometimes referred to as sex positive pornography. In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist. John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, videos gays Adolfo Ruiz and others. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Spanking can be administered in a number of spanking positions. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. The most common male masturbation technique is simply to hold the penis with a loose fist and then to move the hand up and down the shaft.