Warning: the following are just a few of the most egregious examples of envelope labeling gone wrong.
Someone, somewhere, decided to label an envelope with a bright pink marker, claiming it was "Special Delivery" – only to have it mistaken for a package from a 5-year-old's birthday party and opened by a well-meaning but confused mail carrier.
Learn more about the Special Delivery Debacle
An envelope labeled with an aggressive "DO NOT OPEN" in red marker, only to have it be a prank gone wrong – with the contents turning out to be an actual surprise party invitation.
Read about the Great Envelope Prank War
A mysterious envelope labeled with black marker, only to have it contain a recipe for homemade lasagna, thus foiling an actual spy plot.