You shouldn't let someone eat your food.
James often bought frozen dinners, but someone kept eating them before he could get to them.
James wants to always have frozen dinners available.
James secretly installs a camera in the kitchen to catch the person taking his food.
James starts buying twice as many frozen dinners at the grocery store each week.
James identifies which of his roommates is the culprit and confronts them, after which his dinners are safe.
James always has food but has less money available to spend on recreation.