The Fairly OddParents - 6x05 - The Fairly Oddlympics

Timmy Turner, who is tired of being the "guinea pig" of spats between the Fairies, Pixies, and Anti-Fairies, wishes for a competition to see who's the best magical creature. Jorgen won't let any other fairy compete because he is the strongest, but after he wins the first five medals, Anti-Cosmo and H.P. knock out Jorgen, leaving his wimpier brethren at the mercy of the Pixies and Anti-Fairies. Timmy becomes the fairies' trainer and makes a bet: if Anti-Cosmo wins, Timmy will be his godchild, if H.P. wins, Timmy will work for him forever, and if Timmy wins he'll make HP and Anti-Cosmo do something really bad.