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

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

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.

Alternative spelling of you-know-who

A town in the Shire of York, Western Australia. / A coastal town in Sierra Leone. / A place in the United Kingdom: / A place in Canada: / Places in the United States of America:

A state of the United States.