Muriel Blows Up is Part I of the sixth episode of Season 4, which aired October 11, 2002 preceding Profiles in Courage.


A missile strikes the farm, mutating a carrot in the garden. Muriel eats it and begins to grow in size. Courage knows that if Muriel continues to grow, she will explode, and must find a way to stop that from happening.




  • The title card has carrots on it in relation to the episode.
  • Courage uses a webcam and The Computer to view the carrot within Muriel.


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