Penetration may involve use of fingers, toes, sex toys, or penises. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. Cum shots typically do not appear in girl-girl scenes and orgasm is normally implied gay sex video by utterances, cinematic conventions, or body movement. Lolita pornography lesbian milfs that features actual teenage girls under the age of 18 is illegal in most countries and treated as child or youth pornography. The two sets of people involved often meet either randomly or arrange to meet up beforehand over the Internet. Coprophilia , also called scatophilia or scat , is the paraphilia involving sexual arousal and pleasure from feces. In a few relationships, it leads as far as total submission of one partner in the truest sense of the phrase total power exchange . Top and dominant are widely recognized for those partner in the relationship or activity who are, respectively, the physically active or controlling participants. Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. Pantyhose/Tights/Stockings pornography involves women or men dressed in pantyhose, tights, or stockings. The term has origins in the Greek hentai sex language . Special forms include erotic roleplay like ageplay, in which a difference in age, either real or enacted, formulates the background; or petplay. In these research publications, it is suggested that real female ejaculation is the release of a very scanty, thick, and whitish fluid from the female prostate, while the squirting or gushing shown frequently in pornography is a different phenomenon, the expulsion of clear and abundant fluid, which has been shown to be a diluted fluid from the urinary bladder. As women, they face concerns separate from men. Andrews cross or spreader bars. The precise definition of roles and self-identification is a common subject of debate, reflection, and discussion within the community.