As someone who has seen a lot of the attractive-white-mom-with-kids-in-sports at Chick-fil-A, I can imagine a slob who eats donuts would be jealous of the "skinny bitches."  These people don't believe in CICO--they insist it's some complicated hard shit--and since differences are not believed to be due to our own actions, they get mad when there is inequality and some people do well, since it appears that they were bestowed with a good body.