My husband.
I love menu planning, he likes to eat, so it usually all works out. Last weekend, I put together the menu for this week, he looked it over and said it looked good. I double checked again that my plans were fine before I finalized my shopping list. I went to the grocery store and spent $200 stocking up on fresh meat and produce.
Sunday night, he tells me that he has work functions Monday, Tuesday, Wednesday, and Thursday nights, so won't be home for dinner. There's no way my daughter and I can eat all this food (some of which we don't especially like, but were chosen as his favorites), and the produce will not keep. Now, I want to make him eat boxed mac'n cheese for the rest of the year.