The sight of a woman’s butt activates the sensory zone of the male brain that are otherwise activated by drugs and alcohol, so if you loved them once you can not do without them anymore. It’s known that the big ass has the effect of making women more desirable, but to do that there must be a difference between the curvature of the spine and the back bottom, so the girls in this list are not to be BBW or just Curvy, all the substance ends up in the right place! Black girls and Latin women definitely have a natural advantage on this aspect, but given the nature of porn industry today you will find also lots of American girls. Surely a girls first of all need to have a big hip and after that the most important thing is how the amount of fat that genetics leads to accumulate at that point, without ruining the rest of the body. TOP 50 Pornstars with Big Butts The size of the ass depends by the genetics but there is not an exact and correct science to define a nice big ass.