Testosterone discourages fat storage in these areas. Some men enjoy masturbating during pegging. A related anime hentai term used in the genre is the term cougar, which implies an older woman as predator. Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. Swinging can take place in various contexts, ranging from a spontaneous sexual activity at an informal social gathering of friends to a regular social gathering in a sex club or residence. Lolita pornography caters to ephebophiles. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with either partner being the receiver and the giver. In Japan, point of view pornography is referred to as hamedori . A scene where many women have sex with one man is referred to as a reverse gang-bang. 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. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Some prefer a particular type of clothing to urinate. Particularly, some pornography in this genre features butch women, who are almost never seen in mainstream big tit milf pornography. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. However, various groups within society considered such depictions immoral, labelling them pornographic, and attempting to have them suppressed under obscenity laws, with varying degrees of success. In a few relationships, it leads as far as total submission of one partner in the truest sense of the phrase total power exchange gay boy porn . As well as traditional attraction, the topic also incorporates feederism and gaining, where sexual gratification is obtained via the process of gaining body fat.