The point is that when you realize that the food budget is equivalent to $9, the only way you can make the coffee expenditure seem unrealistic is to convenientl

The point is that when you realize that the food budget is equivalent to $9, the only way you can make the coffee expenditure seem unrealistic is to conveniently not mention that fact and say something like "You spend 33% of your food budget just for coffee?". Accusing someone of having a caffeine addiction for spending a mere $3 a day on it is just silly.