The Fairly OddParents S03E12 - The Grass Is Always Greener

Timmy runs away from home so his parents could have the same things in life as the Dinklebergs, and meets the carnies at a carnival. The carnies are fairies (except for the crocodile, who is real) that help kids who run away from home. Timmy realizes his parents actually do miss him and returns home, finding out that the carnies were working with Cosmo and Wanda.