Milk chugging, or the "gallon challenge," was a thing a few years ago. The rules are pretty simple: Drink a gallon of milk in 60 minutes, and keep it down. It is harder than it sounds, as many a ...

A perfect example is a gallon of milk. It's almost a no-brainer if you've got more than a few people in your household, because it can be used for everything from your morning latte to your bowl ...