Union Jack upside down
Definition
The national flag of the United Kingdom (also known as the Union Jack) flown in an inverted position, traditionally recognized as an international maritime distress signal indicating urgent need for assistance.
Figuratively, a chaotic or distressed situation, evoking the reversed flag's connotation of trouble.
Examples
The yacht's crew flew the Union Jack upside down after the engine failed, turning their luxury cruise into a budget salvage operation.
Spotting the Union Jack upside down on the distant ship, the rescue helicopter pilot quipped it was probably just the captain's laundry day gone wrong.
My kitchen after Thanksgiving dinner is a Union Jack upside down – total mayhem signaling for a cleanup crew.
The old pub displayed the Union Jack upside down after their team lost, as if surrendering to the rival fans across town.