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This colloquial phrase is commonly heard in modern millennial social circles and among co-workers in fields of work involving the skilled trades, etc. Used primarily as a call-and-response, but can also be used formally in the pejorative sense.
If it ain't in the taint, where is it?

Somewhere between Schenectady and Coxsackie.
by Randall Whitaker March 09, 2021
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