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2.
The thing you say when you're about to do something really stupid that will, without question, go wrong.
"I'll just swim through this pit of crocodiles like a baws. What could possibly go wrong?"
by Derpalina January 16, 2013
 
1.
WCPGW- A statement of unbridled optimism and also an immediate trigger for Murphies Law. Generally uttered at meetings followed within seconds by a cascade of unexpected and horrid consequences.
What are you doing today?
Cleaning windows on the World Trade Centre, "What could possibly go wrong"
by Captkap March 13, 2011