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Watch The Grim Adventures of Billy and Mandy Season 1 Episode 14 Online

  • 8.1/10
  • COUNTRIES: United States of America
  • Subtitles: English

Billy tells Grim to help him throw a surprise birthday party for Mandy. Then, a reluctant Grim helps Billy prepare a cake while keeping it a secret from Mandy. In the end, a somewhat surprised Mandy reveals that her birthday isn't for the next five months, something that Billy already knew about.