The noise someone makes when they get asked a question about something they cannot answer. Can also be used as a phrase to start a conversation...
ex 1

GUY 1: "Hey man. Did you see that giant bear with robot legs last night?"
GUY 2: "Wrauh?"

ex 2

GUY: "WRAUH!"
REST OF PEOPLE IN THE CONVERSATION: "HAHAHAHAHAHA"
by Lars Gnzlez June 5, 2009
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