"What to Expect When Bart's Expecting" is the nineteenth episode of the twenty-fifth season of the American animated television series The Simpsons and the 549th episode of the series. It originally aired on the Fox network in the United States on April 27, 2014. It was written by John Frink and directed by Matthew Nastuk.

In the episode, Bart makes a voodoo doll of his hippie art teacher when he gets sick of art class and cast a spell to make her sick, but when he inadvertently gets her pregnant, he becomes a savior to Springfield couples trying to conceive—and is subsequently kidnapped to help conceive a thoroughbred race horse. Tavi Gevinson guest starred as Jenny. The episode received mixed results.