don't worry; mind your own business. Semi-exclamatory imperative UK, 1959.

used as a humorous admission of misunderstanding. A key signature line of the early years of NBC's Saturday Night Live, uttered by the Emily Litella character played by Gilda Radner who would end rants about 'Soviet Jewelry' or 'the deaf penalty' with the humble 'never mind'. Repeated with referential humour US, 1977