Lisa's First Word Bart was two during the flashback. Maggie's first word was provided by the Academy Award-winning actress Elizabeth Taylor, who would also voice herself in the season four finale, "Krusty Gets Kancelled". While promoting the episode, the producers initially did not reveal who the voice of Maggie would be, prompting speculation as to the identity of the actress. Although it was only one word, the voice came out "too sexy" and Taylor had to record the part numerous times before the producers were satisfied and thought it sounded like a baby. Several sources, including John Ortved's "The Simpsons" history article "Simpsons
Lisa's First Word born and gets all the attention, Bart takes an immediate dislike to her. Eventually, he is about to run away until Lisa says her first word, "Bart". Thrilled that his name is his sister's first word, Marge explains to Bart that Lisa adores him. He accepts her as his little sister and they both find it funny that they each call Homer by his name, rather than "daddy" as he wishes. Back in the present day, Homer takes Maggie to bed, commenting on how the sooner kids learn to talk, the sooner they learn to talk back, and tells Maggie