Now you know!

At local taverns, pubs, and bars, people drank from pint and quart-sized containers. A bar maid's job was to keep an eye on the customers and keep the drinks coming. She had to pay close attention and remember who was drinking in 'pints' and who was drinking in 'quarts,' hence the phrase 'minding your 'P's and Q's'.

 

I hope you are smiling about this bit of trivia! Thanks Theresa for sharing this wealth of information.

                                                                          You've heard it said before, but I'll say it again - 

                         "There's always a story."