The term hentai is never used in this context in Japanese. Group sex can occur between people of all sexual orientations and genders. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. The phrase is commonly found on porn sites. Bottom and submissive are widely recognized terms for those partner in the relationship or activity who are, respectively, the physically receptive or controlled participants. Men and women may masturbate until they are close to orgasm, stop for a while to reduce excitement, and then resume masturbating. Another variant of reality pornography naked milf consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. Bisexual DVDs sell much better online than in adult video stores, possibly due to customers in stores feeling embarrassed to buy them. English adopts and uses hentai as a genre of pornography by the commercial sale and marketing of explicit works under this label. The prostate gland is one of the organs that contributes fluid to semen. The original definition of dogging – and which is still a closely related activity – is spying on couples having sex in a car or other public place. The buttocks in human females thus contain more adipose tissue than in males, especially after puberty. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard depictions of lesbianism to be erotic. Especially popular in post-World War 2 Japanese culture. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. Clothes wetting: The person is sexually aroused by wetting one clothing or observing another person gay movies doing so. Most soft crush fetishists avoid being placed under the same label as hard crush fetishists, hentai sex believing that crush films with larger animals give the entire group a bad label.