Some masturbate only using pressure applied to the clitoris without direct contact, for example by pressing the palm or ball of the hand against underwear or other clothing. Female masturbation involves the stroking or rubbing of a woman vulva, especially her clitoris, with an index gay movies or middle fingers, or both. Yuri : Featuring two grown adult women in horny milfs a homosexual/lesbian relationship. By comparison, gonzo pornography puts the camera right into the action, often with one or more of the participants both filming and performing sexual acts, without the usual separation between camera and performers seen in conventional porn and cinema. 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. The resulting consent and understanding is occasionally summarized in a written contract, which is an agreement of what can and cannot take place. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. Reading or viewing pornography, sexual fantasy or other erotic stimuli may lead to a desire for sexual release such as by masturbation. Lolita pornography caters to ephebophiles. Since mammary intercourse is a non-penetrative sex act, the risk of passing a sexually transmitted infection that requires direct contact gay hentai between the mucous membranes and pre-ejaculate or semen is greatly reduced. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. Breeding is sometimes followed by felching, which involves sucking the semen from the partner anus. Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner.