I didn't know that..

Shaking ur head from side to side means "no" in most countries but "yes" in Bulgaria and Sri Lanka.

In South America, Southern Europe, and many Arab countries, touching another person is a sign of warmth and frenship. In the Orient, it is considered an invasian of privacy.

In Norway or Malaysia, it's rude to leave something on ur plate when eating (really??); in Egypt, it's rude not to leave something on ur plate.

A door-to-door salesperson might find it tough going to Italy, where it is improper for a man to call on a woman if she's home alone.