It is defined by society in the sense that, if most of our society thinks something is ugly, then it's ugly. They're just pissed because they know that they look terrible and society is letting them know. And to them changing thousands of years of evolution is easier than just admitting you're a raging dumpster fire.  If most of our society thought far chicks were hot they would be in ads and on billboards.  44e   So clearly that isn't the case.