Examples of heterosexual pornographic film series featuring creampies naked milf include Cream Filled Teens and Internal Cumbustion. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. Female ejaculation is the expulsion of fluid by the paraurethral ducts through and around the human female urethra during or before an orgasm. Since development and pronunciation of the buttocks begins at menarche and declines with age, full buttocks are also a symbol of youth. Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. It has also been recommended as a form of foreplay or safer sex. Its hentai videos primary goal is sexual arousal in its audience. Although interracial pornography theoretically can apply to depictions of sexual activity between performers of any different racial groups, the term is most commonly used for heterosexual sex acts between black and white performers. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. These agreements are binding in the sense that the parties have the expectation that the negotiated rules will be followed. Is also common of the furry genre. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive. Cuckold fetish pornography that involves a cuckolded husband. The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger videos porno gay animals with vertabrae, and arguably more pain-susceptible animals .