When you realize McDonalds isn't even the worst of the fast food joints in terms of how shit and calorie dense the meals are for you, but even if you took a medium meal it's still close to a thousand calories unless you get a water.  I was looking at Hungry Jacks menu in Australia (basically our version of Burger King) and some of the meals are closer to 2k calories, for ONE MEAL. It's also my understanding that there are people who venture to their local fast food joint for multiple meals per week, and I would guess that you'd either have some stories worthy of classic FPS greentext, and that you have some regular low orbiting satellites visit your establishment.