Other objects such as ball gay boy porn point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. Bestiality is illegal in many countries. A study of the condom usage habits of New Zealand sex workers said that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern period has been destroyed. Real medical shots or videos may violate privacy laws in some countries. The term hentai videos sadomasochism is derived from the words sadism and masochism . In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has increasingly become a genre in its own right. 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. Testosterone discourages fat storage in these areas. Once insertion is complete, the fingers are either clenched into a fist or kept straight. Yaoi is anime or manga that features mature milfs gay males . Arcane or occult pornography involves sexualized situations with an occult or magical tone or performers who costume themselves in keeping with the theme, for example, a male performer dressed as a wizard.