go down the wrong way
Of food or drink, to be swallowed in such a way that one briefly chokes or starts coughing. Oh, she'll be all right, I think she just took a drink and it went down the wrong way. A: "Oh, geez, are you OK?" B: "Ack, yeah—my tea just went down the wrong way!" Sorry about all that coughing! Whew, my water went down the wrong way.
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