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1.
A 'fiduciary' or someone charged with the responsibility of handling money that really sucks at it!
You know that Ben Bernaknke turned out to be a real fidouche bag.

Secretary of the Treasury Tim Giethner is a real fidouche bag and his days are numbered.

Did you get the bank loan?
Nah, the loan officer turned out to be such a fidouche bag
by day trader 55 January 27, 2010