Why we buy milk, bread and toilet paper when it snows

Expect a run on milk ahead of a possible storm.

Story highlights

  • Those items are always the first to go when snow threatens
  • The trend apparently dates to the mid-20th century

A version of this story ran in January 2015.

(CNN)Is there something about snowstorms that makes us want to eat French toast and sit on the toilet?

With every predicted blizzard, there's a mad dash to load up on milk, bread, eggs and toilet paper. But why those particular items?
Sure, there are some variations, including booze, snack foods and even ice cream. Yet these items are the first to disappear from store shelves when the dreaded s-word is mentioned.