What does Ps and Qs mean as in one minding their Ps and Qs as in behaving?

One origin of the story of "mind your Ps and Qs" comes from early printing presses. Printers placed individual letters on a frame to print a page of text. The letters were reversed, making it easy to mistake lowercase ps and qs in setting the type.

A reminder to stay watchful of the details could have come from this time as well. In a similar setting, this expression has been attributed as an adage for teaching children to spell. Another origin comes from English pubs and taverns of the seventeenth century.

Bartenders would keep a watch on the alcohol consumption of the patrons; keeping an eye on the pints and quarts that were consumed. As a reminder to the patrons, the bartender would recommend they "mind their Ps and Qs.

Excellent answer thank muchlyThanks! JettRink 1 month ago .

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