You drink 2 bottles of OJ in one day?
Also, he forgot to include chocolate chips in his budget
ha... <verrrrry funny>
The OJ and cereal shopping trip would be a normal one-day grocery store visit that is intended to last a week, but those 4 items would eat up the budget for the entire day.
The only way that I can see a $20 food budget per day for 2 adults working ($120 per week for groceries is what he wrote)
is if they eat breakfast and most lunches out and Shabbosim out, and that budget goes mainly towards daily dinner and drinks/snacks in the house...