Nowadays porn is pretty much like a mall food court's food, I think I heard someone liken it to that once. Basically you're watching whatever, you walk into the food court and say "Oh hey, popeye's chicken. That sounds good." but before you start getting in line you keep looking, and see a BBQ ribs place. "That might be better. Maybe I'll go there." and you keep looking and see some badass greek place. And the problem is there's an unlimited amount of places in this food court and it's hard to stay in one line, because if you keep looking you'll PROBABLY find something better.