When in Fluttershy's house and getting ready for bed, the Cutie Mark Crusaders speak with each other's voices a few times. For example, Scootaloo speaks with Sweetie Belle's voice, or Sweetie Belle speaks with Apple Bloom's voice. See more
[With the girls behind her, Fluttershy stands up to the cockatrice
YOU! Just who do you think you are, going around turning others into stone? You should be ashamed of yourself! I have half a mind to find your mother and tell her what you've been up to, young man! Now you go over there and turn Elizabeak and my friend Twilight back to normal - and don't ever let me catch you doing this again! Do you understand me?