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422 (spoken four twenty two) is code for a hippie. The idea comes from 4/22 or April 22nd which is earth day and so millions of hippies the world round' come out of the woodwork on this day. Mostly used by police to ID a dirty or stank hippie looking person. On some occasions fire & rescue teams will use the code as will hazmat crews when the hippie is exceptionally filthy or smelly.
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