Cross Cultural Understanding

An inverted two-finger "peace sign" or "V for victory sign is an obscenity.
People tend to walk on the left and pass on the right.
Tapping the side of the forehead in the UK means you are stupid, not smart.
When communicating the number "2" with the fingers, it is best to keep the fingers tightly together. Two fingers apart, knuckles outward, means "Up Yours!" and is definaitely rude.
Posted by- beancurd
A half-closed fist waved in a reciprocating lateral motion is a gesture for the expletive "wanker", an abusive term on the same level as "asshole" or "the finger" gesture in the USA.