Buying way too much produce
Kids around the world starve every day while feckless Americans go about wishfully buying bunches of kale, spinach, and broccoli in the same grocery trip, before letting them wilt to a black gravy in the part of the fridge that appliance makers poetically dubbed "the crisper."
Having more than one frozen pizza in the freezer
Aside from rotisserie chickens, frozen pizzas are the greatest value-to-effort ratio the grocery store has to offer. Which is why it's so tempting to stockpile your freezer with a six-month supply of pepperoni-and-sodium discs.