Which Came First?

The Grim Adventures of Billy and Mandy: "Which Came First?"

Season 3 · Episode 16

The Grim Adventures of Billy and Mandy Season 3 Episode 16

The Grim Adventures of Billy and Mandy: "Which Came First?" Season 3 · Episode 16

While going to a science museum, Billy and Mandy's school bus breaks down in the middle of the desert. After digging for fossils, Billy, Mandy and Grim wander around and find an abandoned mine, where Billy is captured by a giant, mutant chicken. When Mandy and Grim go to rescue him, they find an underground laboratory from the days of the Cold War where mutant chickens were created. The mountain makes eruption, the chickens are roasted by lava, and the whole class obtains food so they do not have to resort to cannibalism.

  • Seasons
  • Top Rated

here list of episodes

Here you can show episodes grouped by release year.

Here you can show the top rated episodes across all seasons.