The IMDB quotes page for The Fairly OddParents has the following quote:
Wanda : Two wrongs don't make a right.
Cosmo : But three rights make a left, and now it's time for the show!
I believe the quote was near the end of an episode and was followed by Cosmo dancing and singing "La Cucaracha" before Wanda blasted him with a hose. What episode of The Fairly OddParents is that quote/scene from?