Here is the US, doggie bags WERE originally so restaurant patrons could bring home the meat scraps to their dogs. However, it has evolved into just asking for a doggie bag to bring them home for later human consumption as well. We are shameless and don't mind having a wait person bag-up our leftovers to eat later. If I am alone I often even ask them before hand to just put the salad (dressing on the side)in a 'to go' box since I know I will not be able to consume the entire meal.