Similar to Freud idea of a fetish, Bhabha defines racial fetish to be a fixation on other races being not different, but lesser or mutilated versions of the white male. While most tentacle erotica is animated, there are also a few live-action movies. Masturbation has been depicted in art since prehistoric times and is mentioned and discussed in very early writings. Teacher and Student or Boss and Secretary pornography involves sexualized situations which take place between an authority figure, such as a teacher or boss, and an underling, such as a student or secretary, often fake. Group sex can occur between people of all sexual orientations and genders. Lesbians may encounter distinct physical or mental health concerns arising from discrimination, prejudice, and minority stress. Pegging is a recently invented gay hentai word nude milfs which features a woman penetrating a man with a strap-on dildo. High heel pornography involves gay boy porn women or men dressed in high heeled shoes. In general, softcore pornography is pornography that does not depict explicit sexual activity, sexual penetration or extreme fetishism. Consent is the most important criterion here. BDSM pornography depicts bondage and discipline, domination and submission, sadism and masochism. Making a pearl necklace is one of the activities that sex workers use as safe sex alternatives for people who refuse to wear condoms. For other diaper fetishists, simply wearing a diaper, the bulking feeling and crinkling sounds associated with it, is enough to cause the fetishist a form of erotic pleasure or sexual arousal. Cum-shot pornography features a collection of male ejaculation scenes. Fat fetishism also incorporates stuffing and padding, whereas the focus of arousal is on the sensations and properties of a real or simulated gain. Practitioners have described going to public places such as a mall or a park. Ethnic pornography is a genre of pornography that features performers of specific ethnic groups, or depictions of interracial sexual activity.