For many people, the small circular indent on the side of a milk jug goes completely unnoticed. But recently, a social media post brought attention to this mysterious feature, sparking a flood of theories. One post even claimed, “Most people will go their whole lives without ever knowing what the circular indent on the side of the milk jug is for.”
So, what’s the truth behind this curious little bump?
Popular Theories About the Milk Jug Indent
Social media users had plenty of ideas.
Cory Anderson suggested, “the milk is going bad when it pops out.”
Another commenter guessed it might have to do with cold weather and expanding cartons.
Andrew Serpico added, “the bubble gives the milk somewhere to expand to so it won’t bust the carton if you freeze it.”
While some of these ideas sound logical, they don’t quite explain the full story.
A Design That Serves a Purpose
