been to the rodeoBeen exposed to conmen and hucksters; experienced.Some years ago I was talking to a ten-year-old boy who had been to the Rodeo. He was a lad whom most casual observers would readily have called tough.
not one's first rodeoNot the first time one has been in a particular situation; used to indicate past experience.Look, honey, this ain't my first rodeo, OK? I was doing this when you were in short pants.