Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. Standing up, a chair, the corner of an item of furniture, or even a washing machine can be used to stimulate the clitoris through the labia and clothing. Such works have also often nude milfs been subject to censorship and other legal restraints to publication, display or possession. Some people masturbate by using machines that simulate intercourse. A lesbian is a female homosexual; a female who experiences romantic love or sexual attraction to other females. The term breast fetishism is also used to refer to cultural attention to female breasts and the sexuality they represent, with debate continuing as to whether the modern widespread fascination with breasts among heterosexual males in western societies is a sexual fetish. Some intend to create situations where others hentai sex can see their wet clothing. Rubber pornography involves rubber, latex, and similar materials. Many transgender people regard the term shemale as offensive, arguing that it mocks or shows a lack of respect towards the gender identity and gender expression of transgender individuals; in this view, the term emphasizes the biological sex of a person and neglects their gender. Cheerleader pornography involves pictures of cheerleaders, both staged and real. Lolita pornography that features actual teenage girls under the age of 18 is illegal in most countries and treated as child or youth pornography. A smotherbox gives a more dramatic experience . The consensual submission of the submissive is sometimes demonstrated to others by symbols indicating his/her belonging to the dominant, such as wearing a collar, special tattoos, piercings, a very short haircut or a bald head. Instead, all five fingers are kept straight and held as close together as possible , then slowly inserted into a well lubricated vagina or rectum. Penetration may involve use of videos gays fingers, toes, sex toys, or penises. Gonzo pornography is a style of pornographic film that attempts to place the viewer directly into the scene.