and don't you forget it

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and don't you forget it!

1. (generally in an angry tone) bear in mind, remember

• Sometimes used without and.

• “and don t you forget it”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “and don t you forget it” in Longman Dictionary of Contemporary English, Longman.
• “don t you forget it” (US) / “don t you forget it” (UK) in Macmillan English Dictionary.