Posted by James Briggs on September 17, 2003
In Reply to: Mind your P's and Q's posted by Diana on September 17, 2003
: I've always been told that "mind your P's and Q's came from old pubs where ale was ordered in pints and quarts; if someone became unruly, he was told to mind his p's and q's - in other words, keep himself under control.
There are many other possibilities too. See our previous discusion - link below