TR

Season 4, Episode 22

Sibling Rivalry

6.8/ 10March 26, 200624 min

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.

Directed by
Pete Michels, Dan Povenmire, Peter Shin
Written by
Cherry Chevapravatdumrong

Guest stars

All episodes — Season 4

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  1. S4 E1

    North by North Quahog

    May 1, 20057.122 min

    Peter and Lois decide to go on a second honeymoon. But when Peter crashes the car, he decides to pose as Mel Gibson to stay in his fancy hotel suite, where they find a copy of a "The Passion of the Christ" sequel. They attempt to destroy th

  2. S4 E2

    Fast Times at Buddy Cianci Jr. High

    May 8, 20057.122 min

    Brian becomes a substitute teacher at Chris' school after his teacher wins the lottery. When Brian is moved to teach a class of troubled kids, Chris falls in love with his new teacher, Mrs. Lockhart, who promises to love Chris only if he ki

  3. S4 E3

    Blind Ambition

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    After Mort bowls a perfect game, and Quagmire gets a key to the city by performing CPR, Peter notices he has nothing to be proud of. He then attempts to achieve fame by setting the world's record for most nickels swallowed. However, a sligh

  4. S4 E4

    Don't Make Me Over

    Jun 5, 20056.822 min

    When Meg gets turned down for a date, she asks her family for support. Lois ends up taking her to the mall, where she gets the ultimate makeover. Meanwhile, Peter tries to start a band with the guys, but when their first gig fails, the fami

  5. S4 E5

    The Cleveland–Loretta Quagmire

    Jun 12, 20057.122 min

    When Peter hears Loretta scream, he tries to help out, but discovers Loretta is cheating on Cleveland. Peter figures out that it was Quagmire and decides to tell Cleveland about it. But when Loretta walks out on Cleveland he doesn't take it

  6. S4 E6

    Petarded

    Jun 19, 20057.323 min

    After winning a game of Trivial Pursuit, Peter is convinced he is a genius. To prove Peter wrong, Brian suggests he take a test of the MacArthur Genius Grant. The test results say that Peter is technically mentally challenged. Peter has