Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. 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 pornography may contain graphic sexual activity and visible penetration, including unsimulated sex scenes. Bobbi porn milf S. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. Women porn is often gay twink porn produced by women and aimed specifically at the female market - rejecting the view that men are turned on by porn but women only by a box of chocolates. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. Group sex can occur between people of all sexual orientations and genders. When all regions of the face are included, facial cum shots comprise approximately 62% of scenes where external ejaculation occurs. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. Squirt pornography involves women ejaculating. This category also includes pornographic home movies. It may be regarded as taboo or unnatural, and is a criminal offense in some countries, punishable by corporal or capital punishment; by contrast, people also regard anal sex as a natural and valid form of sexual activity that may be as equally fulfilling as any other desired sexual expression. It may also involve touching, rubbing, or pinching the nipples or other erogenous zones while masturbating. A facial is a form of non-penetrative sex, though it is generally performed after some other means of sexual stimulation, such as vaginal sex, anal sex, oral sex or masturbation.