A crush fetish is a fetish in which one is sexually aroused usually when someone crushes objects, food, and sometimes small animals with their body, usually under their foot, or when crushed oneself. The range of its individual characteristics is thereby wide. Hugo Ohira, director of marketing for Silvercash, rhetorically asks Who does not like spewing their load on a pretty young face? Mammary intercourse is a sex act, performed as foreplay or as non-penetrative sex, that involves the stimulation of the male penis by the female breasts and vice versa. The arousal from being desperate comes from the sensation of having a full bladder. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Sexologist Alfred Kind suggested that the buttocks is the primary big tit milf sexual presentation site in primates. Pornography is often distinguished from erotica, which consists of the portrayal of sexuality gay movies with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. This may help them develop their orgasm, increase its pleasure, and may inspire them to masturbate on a more frequent basis. It is sometimes combined 3d hentai with BDSM features. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive.