S4 E22
Status
Continuing
Next episode
3 years ago
Airs
Sundays 9:30 PM on FOX

Season 4  "Sibling Rivalry"  4x22

Aired 18 years ago - Mar 26, 2006

Peter gets a vasectomy and loses all his sex drive. Lois begins to gain weight, and as a result, Peter's regains his interest in his wife. When Lois' habits get out of control, she has a heart attack. The surgeon must remove Lois' fat to reach her heart, returning her to her normal weight. Meanwhile, Stewie's half-brother Bertram returns to confront him, where they have a war for control over the playground.

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