Meaning of the word "mind your p's and q's" in English

What does "mind your p's and q's" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

mind your p's and q's

US /maɪnd jʊər piːz ænd kjuːz/
UK /maɪnd jɔː piːz ænd kjuːz/
"mind your p's and q's" picture

Idiom

to be careful about your behavior and manners, especially in a formal situation

Example:
When you meet the Queen, you must mind your p's and q's.
The new intern was told to mind his p's and q's during the client meeting.