In contrast, if one earns enough to live a normal life they instantly change into one of the best regular customers. One can make a career out of flipping burgers and have a long term [professional] relationship with them. If they are indeed overweight give them a salad on the house and have them explore the many delicious healthy things on the menu. Delicious because one gets room to think about improvements when not drowning in bills. An eating disorder usually comes with above average knowledge of the culinary realm. Should make an interesting conversation.