This is the tenth episode of the fourth season of the Simpsons, and it's a good one based off sentimental flashbacks. In the four seasons so far, this is the third flashback episode based off Marge and Homer's history. But this is more modern history featuring a two-year-old Bart and a newborn Lisa. The episode also features an emotional moment, which is helped in a voice cameo by Elizabeth Taylor.
In this episode, "Lisa's First Word," the Simpsons are trying to coerce Maggie into saying her first word, but she is being very stubborn. Homer and Marge decide to tell their children the story of how Lisa said her first word and how Bart was extremely jealous of Lisa when she was born.
Overall, this is an excellent episode because of its historical nature. I have a soft spot for these kind of episodes as we truly learn about the Simpsons from viewing their past. It's a sentimental, but funny episode. That last scene though......I rate this episode 9/10.