That ought to help reserve power for the clean-handed.

ECONOMIST: Bulgaria tackles corruption

In a Chinese farmers market, stooges handed over either clean or dirty notes, then asked for 500g of an extra vegetable.

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All venues are handed over "clean" to the organisers - unless an agreement has been reached as part of a sponsorship deal.

BBC: Glasgow Commonwealth Games venue named Emirates Arena

So let's get this straight: If the investment bankers' money is grudgingly handed over to the taxman it's squeaky clean.

WSJ: A Protest Without Rhyme or Reason | Postmodern Times by Eric Felten

With the game seemingly petering out to provide a satisfactory share of the spoils for each side, Brazil substitute Ramires broke from the script and struck a shot from 25 yards in injury-time which took a deflection and was goalbound until Eduardo intervened with a good one-handed save to preserve Portugal's 100% clean-sheet record in the tournament.

BBC: Portugal 0-0 Brazil

When the boy told her he'd handed it over to a classmate, she finally came clean to administrators, who put the school on lockdown and called police.

CNN: Surprise! Mom packed you a nice gun