(I) don't mind if I do meaning, definition, what is (I) don't mind if I do: used humorously to accept something such: Learn more. I don't mind if I do. Said to politely accept an offer of food or drink: "There's plenty more cake if you'd like another piece." "I don't mind if I do. I phrase/saying to say while taking something that should have been, but wasn't, offered to you. Usually goes along with a deliberately rude gesture, like
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