Wouldn't say it was the worst meal ever, but one that sticks out was the time Mr. Carny made a chilli but put in waaaaaaaay too much chilli powder and spice and thus made it almost unbearably hot. It was basically 'bite' - 'scream' - 'pause' - 'bite' - 'repeat'
The next day, with much of it left, he bought sour cream and dumped the whole lot in. It was still fiery, but about eatable.