Phineas and Ferb — Episode 18: It's a Mud, Mud, Mud, Mud World

You are watching the episode It's a Mud, Mud, Mud, Mud World Phineas and Ferb create a monster truck for Candace to practice driving while Dr. Doofenshmirtz tries to find investors for his line of monster trucks that are actual monsters, with a trump card to take down the competition.