Urolagnia celebrity porn is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. Pornographic films are typically categorized gay boy porn as hentai movies either softcore or hardcore pornography. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. A sex party is a gathering at which sexual activity takes place. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses . Yaoi is anime or manga that features gay males . Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. The term BDSM dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M. Concerted deployed sexual rejection exercised on the partner can be an aspect of Dominance and Submission as well. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm. Sigmund Freud considered foot binding as a form of fetishism. Women with women Main article: nude milfs Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male naked celebrities audience. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. The full-weight body-pressure, moisture, sex odors and darkness can be perceived as powerful sexual attractions or compulsions. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection.