The Fairly OddParents (2001)

S2E14 The Switch Glitch

Timmy is frustrated with Vicky, the babysitter who always seems to have the upper hand. In a moment of anger, he wishes he could take her place to get back at her. However, as guilt starts to creep in, the situation escalates when Cosmo and Wanda are unexpectedly reassigned to Vicky’s care!