This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological usage of both terms. Examples hentai sex include the Girls Gone Wild and Girls Who Like Girls Series. This technique may include the use of a simulacrum, or artificial naked milf vagina. Enema naked celebrities pornography involves adults given enemas to others, often fake. The higher pay scale and profile within a production often leads to group scenes where a straight actor only tops. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. Arousal may be triggered by seeing the body movements or facial expressions of that person. Bisexual pornography is a genre of pornography which most typically depicts one woman and two men who all perform sex acts on each other. Bareback sex is physical sexual activity, especially sexual gay twinks penetration, without the use of a condom. Crying pornography that features naked celebrities participating actors crying. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . 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. Other possibilities are possible, such as a man having sex with two women who are having sex with each other. Real jail or prison or police station shots or videos may violate laws in some countries. The buttocks in human females thus contain more adipose tissue than in males, especially after puberty.