[s4e22] Sibling Rivalry -

: The episode includes a shot-for-shot parody of the film Better Off Dead during a drag race scene.

: A literal war for "The Hill" at the playground ensues, featuring high-tech weaponry and tactical maneuvers typical of Stewie's sci-fi style. [S4E22] Sibling Rivalry

: The bingeing eventually catches up with Lois, leading to a heart attack. She is rushed to the hospital for emergency liposuction, which returns her to her original size and ends their "weight-gain" phase. The Subplot: Stewie and Bertram : The episode includes a shot-for-shot parody of

: Stewie encounters his half-brother, Bertram (born from a sperm bank donation Peter made years earlier), at the playground. The two share the same genius-level intellect and megalomaniacal ambitions. She is rushed to the hospital for emergency

: One famous gag features the letter "Y" being mocked by other vowels for only being a "semi-vowel". Family Guy S4E22: "Sibling Rivalry" Recap - TV Tropes

: After undergoing a vasectomy, Peter loses his sex drive, leaving Lois feeling neglected. To cope with her frustration, she begins overeating.