Real school shots or videos which are sexualized may violate privacy laws in some countries. Production of such films was profitable, and a number of producers specialised in their production. The preference could be barefoot, high-heels, flip flops, and so on, depending on the fetishist. Breast fetishism is a paraphilic sexual interest focused on female breasts . Whether or not licking and fondling is considered tea bagging was once debated on the Howard Stern Show. Barebacking usually refers to a conscious hentai sex and deliberate choice to forgo condoms. The Girls Gone Wild series is one example. For a foot fetishist, points of attraction include the shape and size of the foot and toes , jewelry , treatments , state of dress , odor, and sensory interaction . The introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra , a practice known as urethral play or sounding. The most common male masturbation technique is simply to hold the penis with a loose fist and then to move the hand up and down the shaft. The term has also applied to other professions and even companies trying to appeal to a gay demographic. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Cartoon pornography includes, but is not limited to, hentai and parody renditions of famous cartoons and comics. Positions can also be chosen specifically for added effects such as increased humiliation, elevation gaysex and suspension. 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. If one person is penetrated by two objects, mature milfs it is generically called double penetration .