A year or so ago there was an item in the news about a company that found a box on the loading dock. On the box someone had scrawled “WARNING SIGNS”. The police were called, and eventually the bomb squad was involved. The box turned out to contain the warning signs the company had ordered.
I’d love to know how a box looked suspicious. Did it have shifty eyes?
Not necessary. Someone once read A Tale of Two Cities, and has since associated Cartons with treason and insurrection.