Patricia Hill Collins, an African-American writer, theorizes that this is derived from a stereotype that those of black descent are promiscuous, and their buttocks are objectified by porn as a result. Creampie pornography features ejaculation inside the vagina , mouth or rectum instead of the common cum shot, followed by the visible seeping or dripping of semen from the vagina, mouth or anus. Arcane or occult pornography involves sexualized situations with an occult or magical tone or performers who costume themselves in keeping with the theme, for example, a male performer dressed as a wizard. The slave is usually strictly forbidden from placing their lips directly on the body of the dominant so the practice routinely involves them receiving much of the spray all over their face, hair and body, however, another way of doing this that applies mostly to male dominants, is to place the mouth on the head of the penis and drink the urine as it is released. The most common male masturbation technique is simply to hold the penis with a loose fist milf fuck and then to move the hand up and down the shaft. In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. This is commonly called double vaginal penetration or double stuffing. Medical pornography involves sexualized medical, often young gay porn fake, including gynecological pelvic hentai movies examinations, rectal examinations, and pelvic or gynecological ultrasounds. Mutual masturbation foreplay The manual stimulation of each other genitals where the session eventually leads to sexual intercourse. The most successful animated features produced in the United States primarily for adult audiences were directed by Ralph Bakshi, including Fritz the Cat, Heavy Traffic and Coonskin. Such documents have not been recognized as being legally binding, nor are they intended to be. Female masturbation involves the stroking or rubbing of a woman vulva, especially her clitoris, with an index or middle fingers, or both.