In Spain, people normally greet friends with a kiss on the lip but in formal situations people shake hand If you agree, you nod your forehand but if you disagree, you shake it from side to side and you can make a 'click' noise with your cheek To show something is expensive or that someone has a lot together. of money, you rub your fingers and thumb together. As in many other countries, in Spain it's rude to put your elbow on the table during a meal. If you're in a restaurant and you want the waiter to bring the bill, you lift your hand and pretend to sign in the air.