"Mirthy Me" is the first segment of the twenty-ninth episode of the Adventures of the Gummi Bears. It premiered on December 12, 1987 alongside "Gummi Dearest", and is the first segment of the eighth episode in the third season.
A Gigglin causes a practical joke spree in the Glen.
Will this stop the dam from being built in time to stop the water from flooding in?
- As is rarely done on the show, this episode reuses a one-off location from a previous episode: Tummi, Sunni, and Cubbi play in the deserted castle ruins from the episode "For a Few Sovereigns More", when the Gigglin notices the trio and follows them home.
- The red Gigglin bears resemblance to the (smaller, green) Slumber Sprite from the episode"Gummi in a Strange Land".