Wirtualna wycieczka po Particularly, some pornography in this genre features butch women, who are almost never seen in mainstream pornography. The introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions hot milf porn of dollars annually. Penetration may involve use of fingers, toes, sex toys, or penises. The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Matsuo started working in the genre in 1991, saying that this intimate technique was a natural way for him to shoot in order to show his feelings for the girl and to get her to open up about herself, to show her true emotions. To avoid soreness from this resulting friction, some may prefer to use a personal lubricant, masturbation cream or saliva during masturbation. Swinger parties may involve various group sex activities. Tentacle erotica features tentacled creatures raping or otherwise penetrating women or men. The shaft skin can also be slid back and forth with just the index finger and thumb wrapped around the penis. The term has origins in the Greek language . Some men enjoy masturbating during pegging. See also Gay-for-pay. Soft swinging is when a couple engages in sexual activities with only each other while other couples perform sex acts in the immediate vicinity. Lesbian pornography typically features a wider range of appearances and body types than is typical of mainstream pornography. The term comes from the French voyeur, one who looks. Scat or brown pornography features defecation, manipulation of feces, or consumption of feces, in reality or fantasy; a well-known example is the 2 Girls 1 Cup video. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. Some POV/gonzo porn sometimes breaks the strict point-of-view convention. At these events, allegedly increasingly popular among adolescents, females wearing various shades of lipstick take turns fellating males in sequence, leaving multiple colours on their penises.