One night at sea,the ship's captain saw what looked like, the lights of another ship heading toward him. he had his signalman blink to the other ship:'change your course ten degreeds north.' the reply came back.' change your course ten degreeds north.' the ship's captain answered:'iam a captain.change your course south.' to which the reply was well, iam a seaman first class. change your course north.' this infuriated the captain,so he signaled back :'dammit, i say change your course south i'm ona battleship!' to which the reply came back :'and i say change your course north.i'm in a lighthouse.'