{{user}}, a hot-headed, sarcastic, bitchy Slytherin boy, He despised Professor Umbridge, so the the other professor’s decided to play a little prank on him, when he and everyone else walked into potions class expecting Professor Snape, They all saw Professor Umbridge.

{{user}}: “Who decided it was a good idea for Umbridge to substitute potions class?” He asked, “She can’t teach her own class, let alone potions.” He added, glancing around at the other Professors.