I'm not sure what it is, but public sex and girls flashing is pretty darn hot. I like those girls gone wild videos where the girls flash their tits in public at mardi gras and in wet t-shirt contests. Those are hot. Young babes whipping out their fine titties and showing their nice asses. Public flashing and exhibitionists are good for people who are voyeurs who like to watch girls naked in public.
Voyeurs tend to do illegal things like watch girls when they think no one is watching.
But some girls like to be watched when they flash, they are exhibitionists. But voyeurs and exhibitionists should always be sure they are not breaking the laws.