”Basic Human Anatomy” is the eleventh episode of the fourth season of the NBC sitcom Community, which originally aired on April 25, 2013. In this episode, Troy and Abed switch bodies – an homage of Freaky Friday – while the valedictorian race between Annie and Shirley sees the pair team up to take down Leonard who is currently #1 in the class. The episode was written by Jim Rash, and directed by Beth McCarthy-Miller.