As naked celebrities in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. Some do not use the diapers at all, for arousal, or hentai sex bladder and bowel movements. Buck Angel is the best-known actor in this genre. Pleasure for the giver during anilingus is usually based more on the principle of the act. The padding may also muffle noises from the outside, causing a relaxation effect and heightening their other senses. Since at least 1973, it has also been used to refer to a sexually attractive young woman. In gay pornographic movies, actors who identify themselves as heterosexual, but who nevertheless perform explicit sexual acts with other males on film do not face the same stigmas as the mainstream acting counterparts and indeed can rise quickly to being featured actors. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard depictions of lesbianism to be erotic. Softcore pornography generally contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore big tit milf pornography may contain graphic sexual naked celebrities activity and visible penetration, including unsimulated sex scenes. Many men who like trans partners of any variety, known as tranny chasers, do not necessarily identify as gay themselves. This may relate to fetishes such as voyeurism or cuckolding. Pornographic films are generally classified into sub-genres which describe the sexual gay cock fantasy which the film and act gayporno ors attempt to create. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction. Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented female breasts, from breast augmentation and/or use of hormones.