There is, however, no third party camera work involved. Works in this genre may explore philosophical, political or social issues. Rainbow party A rainbow party is an urban legend spread from the early 2000s. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. Standing up, a chair, the corner of an item of furniture, or even a washing machine can be mature milfs used to stimulate the clitoris through the labia and clothing. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. Common positions include lying on back or face down, sitting, squatting, kneeling or standing. Its gain in prominence has been attributed to its depiction in the film hentai videos Pecker, which was released in 1998. Some masturbate only using pressure applied to the clitoris without direct contact, for example by pressing the palm gay sex video or ball of the hand against underwear or other clothing. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. A study of 164 males in Finland from two SM clubs found that 18.2% had engaged in coprophilia; 3% as a sadist, 6.1% as a masochist, and 9.1% as both. 18% of heterosexuals and 17% of homosexuals in the study pool had tried coprophilia, showing no statistically significant difference between heterosexuals and homosexuals. Such ejaculation can be done by mammary intercourse, or masturbation over the other person, or result from the withdrawal of the penis from a partner mouth as he is ejaculating following fellatio, irrumatio, or intercourse. Snowballing or snowdropping is the human sexual practice in which one person takes someone else semen into his or her mouth and then passes it to the mouth of the other, usually through kissing.