Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or anus and rectum, for sexual pleasure. The shocker accomplishes this using several fingers of one hand. Making a pearl necklace is one of the activities that sex workers gay movies use as safe sex alternatives for people who refuse to wear condoms. A large part of the popularity of these videos is seeing how regular and normal the girls are in real-life. Crying pornography that features participating actors crying. Cum-shot pornography features a collection of male ejaculation scenes. Enema pornography involves adults given enemas to others, often fake. Voyeur or peeping Tom pornography is usually more staged with the subjects aware of the cameras, sometimes openly including this exhibitionist awareness. Can also include auto-fellatio, or performing oral sex on oneself. In a separate article analyzing 12 men who engaged in bestiality, an additional analysis of an 11-man subgroup revealed that 6 had engaged in coprophilic behavior, compared with only 1 in the matched control group consisting of 12 SM-oriented males who did not engage momporn in bestiality. Not so for another pair of Czech twins, Elijah and Milo Peters, who work together condomless for both oral and anal sex for studio Bel Ami. Initially, few animation studios in the United States attempted to produce animation for adult audiences, but later examples of animation produced for adults would gain mainstream attention and success. Softcore pornography generally contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore pornography may contain graphic sexual activity and visible penetration, including unsimulated lesbian hentai sex scenes. Men and women may masturbate until they are close to orgasm, stop for a while to reduce excitement, and then resume masturbating. It may be regarded as taboo or unnatural, and is a criminal offense in some countries, punishable by corporal or capital punishment; by contrast, people also regard anal sex as a natural and valid form of sexual activity that may be as equally fulfilling as any other desired sexual expression.