Every single day, thousands of people across the North East order from McDonald's.
But while tucking into your Big Mac meal, have you ever wondered what the buttons on your drink's plastic lid mean? If, like many, you have no idea, then the answer has finally been revealed.
The Mirror Online reports that the buttons save you from guessing which drink is yours when you order more than one Coca-Cola, Diet Coke or Coke Zero. Most cups feature buttons designed to identify each drink in the tray.
