Posted by R. Berg on November 19, 2003
In Reply to: P's & Q's posted by stgcoach on November 19, 2003
: The phrase P's & Q's came form early United Kingdom. Often fights would occur from the rowdy drinkers in the pubs. When a fight was about to break, the bartender would shout to the patrons to watch their Pints and Quarts. (P's & Q's) Taken as a warning to the patrons in the establishment , through time has been taken as just a warning in general, as in manners and behavior.
Several possible origins of "mind your Ps and Qs" have been proposed on this forum. Do you have some reliable documentation to back up this explanation?