Slang for the Washington Public Power Supply System (WPPSS), which made the record books with the largest municipal bond default in history.

Investopedia Says:
During the 1970s and 80s, the WPPSS financed the construction of five nuclear power plants through the issuance of billions of dollars worth of municipal bonds. In 1983, due to extremely poor project management, construction on a couple of plants was canceled, and the completion of construction on the remaining plants seemed unlikely. Consequently, the take-or-pay arrangements that had been backing the municipal bonds were ruled void by the Washington Supreme Court. As a result, the WPPSS had the largest municipal debt default in history.... Whoops!

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