(formal) Used to introduce a question, implying that eliciting an affirmative answer from the interlocutor would be unlikely yet desirable for the speaker.

(chiefly UK) Synonym of don't call us, we'll call you

I don't drive (a car, a vehicle)

Indicates that the speaker does not want to discuss a particular topic.

I don't want to buy anything

Alternative form of black don't crack

People of African descent tend to wrinkle less with age than people with fairer skin.

A caution that the activity being described or demonstrated is not safe for ordinary members of the public to attempt.

A slogan of the hippy movement, dismissing perceived prudish and conservative attitudes of previous generations.

Black people and white people should not form relationships; an admonition against miscegenation. / (more generally) Some people, things or characteristics do not go together.