mind your Ps and Qs

The popular story

There is no shortage of origin stories for mind your Ps and Qs; the difficulty is choosing between them, because each is told with equal confidence and equal lack of proof. The most widely repeated is the tavern theory: that alehouse keepers chalked up customers’ pints and quarts in two columns headed P and Q, and that a drinker was told to mind his Ps and Qs so as to watch his tab and settle honestly.

A rival tale crosses the Channel. It claims the phrase began as an instruction from French dancing masters, warning pupils to mind their pieds and their queues, that is, their feet and the tails of their wigs, as they bowed. A third points to the printing house, where an apprentice setting metal type had to keep the mirror-image letters p and q from being confused in the composing stick. Still others invoke sailors’ pea-coats and queues, or schoolroom penmanship.

The variety alone should give a reader pause. When a single short phrase can be confidently traced to taverns, ballrooms, print shops and the deck of a ship, the abundance of explanations is a sign that none of them is grounded. Each account works by seizing on a pair of things that happen to begin with the two letters and then supplying a scene in which someone would be told to watch them. That is a game anyone can play, and it produces stories, not evidence.

What the record shows

What survives in print is thinner than any of these narratives. A related form appears early: in Thomas Dekker’s play Satiromastix of 1602 a character is described in terms of minding his pee and kue, though what exactly is meant there is disputed. The familiar admonition in its modern shape is found by the mid-eighteenth century; a line from 1756 runs, in the spelling of the day:

Mind your P’s and your Q’s and always travel in the Autumn.

Investigations by the editors of the Oxford English Dictionary added a further strand. They turned up examples from the 1760s in which a person’s Ps and Qs simply meant the rudiments of reading and writing, the letters a child must learn, with one such use in verse published in 1763. That sense sits very close to the everyday experience the plainest theory relies on.

None of this amounts to a single, unbroken line from a first coinage to the modern phrase. The 1602 pairing may or may not be the same expression; the 1756 admonition is the earliest clear instance of the sentence we still use; and the 1760s literacy sense runs alongside it. What the record offers is a scatter of dated fragments in which the two letters recur, not a birth certificate. That is exactly the situation in which invented origins flourish, because a genuine gap in the evidence leaves room for a good story to fill it.

The verdict

The verdict is that the origin is unknown. None of the colourful stories can be traced to a source; each is a reconstruction that begins from the finished phrase and works backwards to a scene that would explain it. The tavern ledger, the dancing master, the printer’s case: all are possible in the abstract and unsupported in the record.

If any explanation deserves quiet preference, it is the least dramatic one. Small children routinely confuse the lowercase p and q, which are mirror images, and adults have long used the two letters as a shorthand for the basic care that learning and good conduct require. The eighteenth-century evidence that Ps and Qs meant the elements of literacy fits this reading without strain. But fitting well is not the same as being proved, and honesty requires calling the matter open.

It is worth noticing what separates this preferred reading from the folk stories. The letter-learning sense is not a scene someone imagined; it is attested in print, in the same century the imperative phrase appears, using the very same words. The tavern and dancing-master tales, by contrast, are supported by no early citation at all. A preference resting on dated evidence is a different kind of thing from a preference resting on a good yarn, even when the conclusion in each case remains short of proof.

What we don’t know

We do not know which sense came first: minding one’s letters, minding one’s manners, or some now-lost play on the two. We do not know whether the 1602 pee-and-kue is the same expression or a coincidental pairing of the letters. We cannot connect the phrase to any tavern, dancing school, or printing house in a way the sources support. The gap between the earliest fragments and the settled modern meaning is filled only by conjecture.

How it changed

Over time the phrase narrowed and steadied. Whatever mixture of letter-learning and general carefulness lay behind it, by the nineteenth century mind your Ps and Qs had become a stock warning to behave well and watch one’s conduct, especially in company or before superiors. The specific letters lost any literal force and survive only as a memorable pairing, easy to say and easy to remember.

Usage today

Today the expression is a gentle caution about behaviour: to mind your Ps and Qs is to be on your best behaviour, to be polite, and to avoid careless words or actions that might give offence. It is used to children, to newcomers, and, half in jest, among adults heading into situations where tact matters. The origin may be lost, but the meaning has never been in doubt.