Top Definition
To make a series of mistakes, so heinously incorrect and far reaching in effect such that the result defies description. The phrase is a combination of other phrases meaning mistake, 'screw the pooch', 'royal fuckup' as well as a group sex form of fuck, 'clusterfuck'. The phase can also be used as a verb, 'clusterfucking the royal pooch.'
Not supporting the public transportation vehicle information system standard on busses was a royal pooch clusterfuck for the public transportation authority.
by wkc December 01, 2006

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