Bart Gets a "Z"

"Bart Gets a "Z"" is the second episode season 21 and aired on October 4, 2009.

Synopsis
Bart and his classmates get their cellphones confiscated by Mrs Krabappel for using them in class. At a meeting in Bart's house, the students realise that Homer is always fun to be around when he's drunk so they decide to get Mrs Krabappel drunk. Each student steals some alcohol from their parents and puts it in Mrs Krabappel's coffee. After Mrs Krabappel gets drunk she makes a scene and gets fired. Bart and Milhouse buy a book called "The Answer". Following the instructions of the book, Bart and Mrs Krabappel build a Muffin store. That's when Bart confesses that he was the one who put alcohol in Mrs Krabappel's coffee. Mrs Krabappel is angry with Bart and leaves.

Meanwhile, at Springfield Elementary, a new teacher called Zachary Vaughn teaches Bart's class and gives everyone their cellphones back, everyone loves him, except Bart. He still misses Mrs Krabappel. Bart was going to put alcohol in Zachary's drink as well but backs out at the last second and decides to tell Principle Skinner instead. While he is confessing he and Skinner hear someone yelling in the hallway. It was Zachary, who got drunk by himself, willie takes him away and Mrs Krabappel gets her job back.

Trivia
The movie that Bart and Mrs. Krabappel watch together is a parody of the 1986 film Back to School, starring Rodney Dangerfield. It apparently stars Larry Burns, who was voiced by Dangerfield in the eighth season episode Burns, Baby Burns.

The blackboard in the background during the Parent/Teacher Night scene between Zachary Vaughn and Homer reads "zackattack.com". This website does not exist, although it could be a parody of screwattack.com.

The "Z" in the episode's title refers to Zachary Vaughn. It is not a typo or reference to the second season episode Bart Gets an F.

This is one of the few times the end credits differ from the normal ones. In this case the credit s are in fancy writing.