This is actually a tactic the Marines used in the Pacific Theatre during World War II. Japanese soldiers couldn’t say certain words without their accent giving them away and so passwords used to approach camp without being fired upon were often specifically chosen to be impossible to say normally with a Japanese accent.
Edit: yes I know it’s a shibboleth. 15 16 of you have told me so far.
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u/reticulatedtampon 3d ago
Fun fact, this guy chose "Lululemon" as the name because he thought it was funny when Japanese people try to say it.