Timmy Turner just might be the oldest 5th grader around (he's 23!) but he's still a kid at heart. According to "Da Rules" Timmy must remain a kid to keep his Fairy Godparents around. Can you blame him for not wanting to give up these two awesomely magical guardians? But Timmy is faced with a big decision to grow up or say good-bye to Cosmo and Wanda.