Sigmund Freud considered foot binding as a form of fetishism. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. The inside of a smotherbox is often padded to provide milf sex videos support for their neck and prevent their head from moving. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. Some techniques which may work for one individual can be difficult or uncomfortable for another. Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men. Female ejaculation is the expulsion of fluid by the paraurethral ducts through and around the human female urethra during or before an orgasm. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. In more vigorous forms of fisting, such as punching or punchfisting, a fully clenched fist may be inserted and withdrawn slowly. Bhabha, Anne McClintock and Kobena Mercer. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. These scenes may involve the female actor calling for the shot to be directed at some specific part of her body. In human sexuality, a threesome is sexual activity that involves three people at the same time. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. Threesome can also refer to a love triangle, a three-way romantic relationship. It is commonly depicted in pornography, but very rarely in mainstream cinema.