Diseño y Desarrollo: Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. Use of the agreed safeword is seen by some as an explicit withdrawal of consent. If one person is penetrated by two objects, it is generically called double penetration . In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. Voyeur pornography may also include amature milf shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. 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. 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. The queening stool is also related to a smotherbox, which also allows the person under the seat to be locked in place, restrained by the neck as in a set of stocks. The use of the word creampie to describe such scenes originated in U. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses . When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. A scene where many women have sex with one man is referred to as a reverse gang-bang. The term sadomasochism is derived from the words sadism and masochism . The most common male masturbation technique is simply to hold the penis with a loose fist and then to move the hand up and down the shaft. NewSolution IT, David S. Brey