Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. Clothed female, hot gay sex naked male is a genre of erotica featuring one or more nude men and one or more clothed women. Consent is the most important criterion here. It spawned numerous sequels, several of which won adult film awards. For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. This may relate to fetishes such as voyeurism or cuckolding. Some do not use the diapers at all, for arousal, or bladder and bowel movements. Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. Caro rejected that as being a necessary conclusion, stating that female fatty deposits on the hips improve individual fitness of the female, regardless of sexual selection. See Gay-for-pay. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore film, in which the male actor ejaculates in a way ensuring maximum visibility of the act itself. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations . Fantasies of group sex are extremely common among both men and women, and group sex is a subgenre in pornographic films. Interracial pornography typically employs ethnic and racial stereotypes in its depiction of performers and many of interracial pornographic films still include racial stereotypes, although the segregation of actors by race has diminished considerably. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. The fundamental principles for the exercise of BDSM require that it should be performed with big tit milf the informed consent of all involved parties. Unlike erotic films, pornographic films contain explicit sexuality and do not claim any hentai movies artistic merit.