Be wary of the hand gestures you flash while traveling through Europe, for this one is incredibly insulting and could make you enemies very quickly.

Ozzy's a peace-sign kind of guy. It was his Black Sabbath replacement, the late Ronnie James Dio, who started making the hand ...

He wrote that raising one's hand with the palm ... activists in the US made the gesture toward police officers. And that is the leading theory when the 'peace sign' started," Nomura says.