The Fairly OddParents - 1x01a - The Big Problem!

After becoming rejected from the football team, bullied by Francis, and sent to bed early by his mean older babysitter, Timmy wishes to be an adult. However, being an adult means having to wash dishes, pay for your own food, and see grown-up movies. Timmy doesn't like his new responsibilities, especially when he is arrested for picking on Francis. Since Cosmo and Wanda can only grant wishes for children, they can't be Timmy's fairy godparents and must be assigned to a child. They are about to be taken away unless Timmy can figure out how to make himself a kid again.