Last updateMon, 01 Sep Types of anal sex can also be a part of lesbian sexual practices. Pornographic films are typically categorized as either softcore or hardcore pornography. There is, however, no third party camera work involved. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern period has been destroyed. A sex party is a gathering at which sexual activity takes place. Today, pornographic films can be sold or rented on DVD, shown through Internet and special channels and pay-per-view on cable and satellite, and in adult theaters. Once insertion is complete, the fingers are either clenched into a fist or kept straight. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. A scene where many women celeb free porn have sex with one man is referred to as a reverse gang-bang. Female dominance refers to BDSM relationships and BDSM scenes in which the dominant partner is female. Mammary intercourse is a sex act, performed as foreplay or as non-penetrative sex, that involves the stimulation of the male penis by the female breasts and vice versa. Mutual masturbation, mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. In the gay pornography industry, which uses amateurs as well as professional actors, the term gay-for-pay refers to actors labeled or believed to be straight but who engage in same-sex sexual activities for money. Both sexes sometimes apply lubricating substances to intensify sensation. A woman can use a secondary vibrator, between the dildo and her genitals, to get pleasure from pegging. Rainbow party A rainbow party is an urban legend spread from the early 2000s. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects.