A celebrity can fight the release in court to maintain deniability while still enjoying the career benefits. Lying face down on a comfortable surface such as a mattress or pillow, the penis can be rubbed against it. On the other hand, the masochist enjoys being hurt, humiliated, or suffering within the consensual scenario. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. This is commonly called double vaginal penetration or double stuffing. For some people, non-penetrative sex is the primary sexual activity of choice above all others. It is sometimes combined with BDSM features. The term sadomasochism is derived from the words momsex sadism and masochism . John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. Older names for a pornographic film include stag film, and blue movie. A woman can use a secondary vibrator, between the dildo and her genitals, to get pleasure from pegging. Target audience are teenage / young adult women. There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. When the interest in a particular subject is obsessive, the behavior may be described as stalking. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. Both sexes sometimes apply lubricating substances to intensify sensation. Bestiality is illegal in many countries. Irrespective of the legal or social view of pornography, it has been used in hentai sex a number of contexts. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . Pornography in Japan is large and intertwined business of adult entertainment with unique characteristics that readily distinguish it from western pornography. 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.