The Fairly OddParents (2001)

Timmy's disappointed to see how boring the Crimson Chin comics have become lately. When he spends a day with the Chin, he sees why - the Chin is lonely. Timmy wishes up a super girlfriend for him, except now the comic is both boring and romantic, yuck! Desperate, Timmy unknowingly makes a wish that changes everything, so he must undo his wish - and fast.