The fourth season of the animated comedy series Bob's Burgers began airing on the Fox network in the United States on September 29, 2013, and concluded on May 18, 2014. The show was once again part of Fox's Sunday night lineup, initially airing in its usual timeslot of 8:30 PM Eastern. Beginning on March 9 and continuing for the rest of the season, Bob's Burgers moved to 7:00 PM Eastern; the move came as a result of the addition of Cosmos: A Spacetime Odyssey to the network's lineup. In this season, Bob subs as the home economics teacher at the kids' school (Bob and Deliver), Linda goes to her high school reunion and ends up singing there (Purple Rain-Union), the family tries to create a local Super Bowl advertisement (Easy Com-mercial, Easy Go-mercial), and the kids set up a trap for Santa Claus (Christmas in the Car).