A colloquial and quick way of saying "what's up though"? Originating in Richmond Hill, Ontario, the suburbs north of Toronto (aka the 6), this word was originally designed to show how people from the hood come up with new words by mispronouncing, combining, and rapidly mumbling a series of words. It can be used to greet homies or to display supremacy when you accomplish something over someone else
Anthony: Did you really just headshot that guy from across the map?
Treyvon: WASADO BABY!!!
Aunt Rosemary's fondness for multiple cats, Minnie Pearl hats, and alien abductions was never a source of shame for Fred, but rather a source of pride. He thought it surely must qualify her for the mythical "Wackadoodle Hall of Fame."