Buster's Best Behavior

Buster's Best Behavior is the first half of the 9th episode of Season 4. It originally aired on November 1st, 1999 with What is That Thing?.

Summary
Buster is funny, but wants to be good at something else, and Arthur wants to be funny like Buster. They end up acting like each other. This annoys their friends and they realize that they are fine the way they are.

Trivia

 * The episode was intended to be called Arthur And Buster's Best Behavior but the episode is incorrectly called Buster's Best Behavior