The volume of semen that is ejaculated depends on several factors, including the male health, age, degree of sexual milf xxx excitement, and the time since his last ejaculation. 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. Female masturbation involves the stroking or rubbing of a woman vulva, especially her clitoris, with an hentai movies index or middle fingers, or both. Pegging films include Strap It On , Babes Balling Boys , Strap Attack, Strap-on Sirenz, Strap-on Chicks, Boss Bitches gay sex video , various movies produced by LEDA Studios, and San Francisco-based Men In Pain. Cum shots typically do not appear in girl-girl scenes and orgasm is normally implied by utterances, cinematic conventions, or body movement. In 1988, a sex tape caused significant damage to Rob Lowe career. Production of such films was profitable, and a number of producers specialised in their production. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. 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. Mammary intercourse has sometimes been considered a perversion. Swinging can take place in various contexts, ranging from a spontaneous sexual activity at an informal social gathering of friends to a regular social gathering in a sex club or residence. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. These are often fake. Sadomasochism refers to the aspects of BDSM surrounding the exchange of physical or emotional pain.