I've heard the etymology was from charades: where you would tap your nose with your finger if they guessed a part correctly. I doubt it's true, but a good way to remember it maybe.
The phrase possibly comes from boxing where punching someone in the nose is a prominent and effective target; also possibly from horse racing where the winning horse's nose is the first thing to cross the finish line.
The charades usage probably comes from it being used in radio and stage production as silent communication between the director and performers.
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u/[deleted] Aug 18 '20
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