The current record is held by Lisa Sparks who had sex with 919 men on October 16, 2004 in Warsaw, Poland as part of the Third Annual World Gangbang Championship and Eroticon 2004. It is sometimes combined with BDSM features. It contains graphic horny milfs sexual activity and visible penetration. Often, strong views are expressed with regard to anal sex; it is controversial in various cultures, especially with regard to religion, commonly due to prohibitions against anal sex among gay men or teachings about the procreative purpose of sexual activity. Depictions of male and female masturbation are common in pornography, including gay pornography. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Men may find stimulation of the anus, rectum, and adjacent organs enjoyable. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. Examples include the Girls Gone Wild and Girls Who Like Girls Series. Both forms of pornography generally contains nudity. For example, in Australia it is rated Refused Classification . The term sadomasochism is derived from the words sadism and masochism . Clothes wetting: The person is sexually aroused by wetting one clothing or observing another person doing so. 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. Most soft crush fetishists avoid being placed under the same label as hard crush fetishists, believing that crush films with larger hentai porn animals give the entire group a bad label. Normal quantities gay twinks of ejaculate range from 1.5 to 5.0 milliliters . Sexologist Alfred Kind suggested that the buttocks is the primary sexual presentation site in primates.