Opa (expression)

'Opa' exclaimed by a waiter in a Greek restaurant in Chicago while lighting Saganaki on fire

Opa! (Greek: Ώπα) is a common Greek verbal emotional expression used frequently during celebrations such as weddings or dancing in Greece. In Greek culture, the expression sometimes accompanies purposeful or unintentional plate smashing. It can also be used to express shock, especially when having just made a mistake.