Projecting your hand with your fingers open is considered very rude.
Looking away when talking to someone is considered very rude.
By moving the head downwards, Greeks mean Yes.
By moving the head upwards, Greeks mean No.
By twisting the hand right and left, with fingers open, but without projecting the hand, means “so and so”.
People never kiss when meeting for the first time.
When people already know each other, they may kiss twice on the chicks, to say hi or buy.
Shaking hands is a more formal way of greeting.
A Greek will be pointing using the thumb when want to say “good job”.