The most interesting feature of the Season 19 premiere, is that it addresses one of Family Guy's longest-running meta-jokes: whether the family can actually hear or understand Stewie .
When Brian asks why everyone can suddenly understand him, Stewie explains that the "intense emotion" of the moment (his cookie-related rage) caused the word to "burst through" his usual baby babble. [S19E1] Stewie's First Word
In this episode, Stewie shouts a ("F--k") during a church service after learning there are no cookies. While he has been speaking fluently since the series began, this was the first time his speech was clearly understood by everyone in the room. Key Meta-Features & Trivia The most interesting feature of the Season 19
A major subplot involves Lois binging the children's show Caillou , fearing it taught Stewie to swear, which served as a vehicle for the writers to mock the real-world cartoon's perceived bad influence. While he has been speaking fluently since the
Later in the episode, Stewie says a second audible word— "Mommy" —suggesting a rare moment of affection for Lois, though he refuses to repeat it for her camera.