I thought this “day” didn’t really exist, so I looked it up. It does and it seems the term originated in Monty Python’s “Life of Brian”.
Here’s the text I found:
“This idiom can be used to highlight that organizing larger groups of people cannot be done, or at least not without requiring a great deal of effort – and patience. The origin of this expression seems to be recent, and has been attributed to a line of dialogue in Monty Python’s The Life of Brian (1979).”
I thought this “day” didn’t really exist, so I looked it up. It does and it seems the term originated in Monty Python’s “Life of Brian”.
Here’s the text I found:
“This idiom can be used to highlight that organizing larger groups of people cannot be done, or at least not without requiring a great deal of effort – and patience. The origin of this expression seems to be recent, and has been attributed to a line of dialogue in Monty Python’s The Life of Brian (1979).”