To the two people on the Amtrak train who were doing a "dueling banjos" coughing routine last week:
Please go to the doctor. It should be a hint you are ill if you cough ten times in a row, then the guy across the aisle responds with five hacks of his own. Is this a rehearsed routine? Are you coordinating your coughs? Is this some sort of avant-garde BS? Two thumbs down for your routine, sirs.