OJ? Don't you mean Daddy Juice? http://deadspin.com/5983646/national-enquirer-oj-daddy-juice-simpson-has-gotten-very-gay-in-prison
It's called the commissary, they can eat as much as they want as along as they have funds in their acct. Some prison's stores look like a 7/11 and that's not count counting 3 square meals a day.