In Homer's case, this included leaping five feet into the air to capture flies and once scaring off an intruder who had broken into Cooper's apartment.

But scaring people away from their taps into the bottled water isle at the grocery store will cost them thousands of dollars a year without making them any safer.

Korean observers said Mr Chen's visit appeared to be aimed at scaring the country's biggest conglomerates into lobbying Seoul against Thaad deployment.