mind one's ps and qs

listen to the pronunciation of mind one's ps and qs
الإنجليزية - الإنجليزية
(deyim) Mind one's manners, or, generally, to be careful of one's behaviour. It is sometimes written mind one's P's and Q's (though some feel that apostrophes are unnecessary in the plurals of capital letters), or mind one's p's and q's
mind one's ps and qs
المفضلات