(Britain, Australia, New Zealand, derogatory, slang) A yob.

You can show someone how to do something, but you can't make them do it.

Alternative form of don't teach your grandmother how to suck eggs

Alternative form of don't teach your grandmother how to suck eggs

It is impossible to change people's habits, traits, or mindset.

really?; no kidding!; is that so? (sometimes used sarcastically in response to the obvious)

(idiomatic, figuratively) It is not possible to make reliable judgments about things or people by considering external appearances alone.

Used other than figuratively or idiomatically: see fuck, you. / (idiomatic, offensive, markedly vulgar) Expression to show discontent with the other party, or to show contempt.

(vulgar) An insulting and humiliating action against somebody.

(idiomatic, imperative) Don't wait. Said cynically to suggest that what has just been mentioned is unlikely to happen soon or at all.