When you're enjoying your McDonald's, you probably don't pause to inspect the lid of your drink. But it turns out you ought to, as the 'buttons' save you from wildly guessing which is yours when you order more than one Coca-Cola, Diet Coke or Coke Zero.
As fast food aficionados will know, most cups feature buttons designed to identify each drink in the tray. However, working this out is not always as simple as you'd hope.
If you don't believe us, you can ask a Reddit user who took to the platform looking for help. It turns out staff don't always use the correct labels on the buttons, leading to confusion.
