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Sibling Rivalry (Family Guy)

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Episode no.  Season 4 Episode 22
Production code  4ACX24
Directed by  Dan Povenmire
Original air date  March 26, 2006
Sibling Rivalry (Family Guy)
Written by  Cherry Chevapravatdumrong

"Sibling Rivalry" is the 22nd episode of the fourth season of the animated comedy series Family Guy. It originally aired on Fox in the United States on March 26, 2006. The episode follows Stewie as he battles with his half-brother, Bertram (voiced by Wallace Shawn), who is born to two lesbians after Peter donates sperm. Meanwhile, Lois begins excessive eating after Peter undergoes a vasectomy and loses his interest in sex.


The episode was written by Cherry Chevapravatdumrong and directed by Dan Povenmire. The episode received mixed reviews from critics for its storyline and many cultural references. According to Nielsen ratings, it was viewed in 7.95 million homes in its original airing. The episode featured guest performances by Randy Crenshaw, Gavin Dunne, Bob Joyce, John Joyce, Phil LaMarr, Rick Logan, Wallace Shawn, Tara Strong, Nicole Sullivan and Wally Wingert, as well as several recurring voice actors for the series.


After a pregnancy scare, Peter reluctantly agrees to get a vasectomy to prevent further repeats. Before the surgery, he agrees to donate sperm, should he and Lois ever decide to have another baby. While in the sperm bank, Peter accidentally destroys all the existing samples, and decides to replace them with his own to prevent himself from getting into trouble. Nine months later, a lesbian couple, who took away some of Peter's sperm in order to conceive a child, gives birth to Bertram, Stewie's half-brother who first appeared in the episode "Emission Impossible".

After the vasectomy, Peter loses his sex drive, much to the frustration of Lois, who embraces overeating as a substitute. Peter begins to ridicule Lois due to her weight, but stops shortly after they have sex and discovers they prefer "fat sex", opposed to their regular sex. Peter attempts to make Lois fatter to feed his sexual urges. After becoming even more enormous, Lois suffers a heart attack during sex; doctors remove all of the fat from her body, and she returns to her normal weight.

Shortly after birth, Bertram declares war with Stewie for control over the playground. They confront each other in the playground with F-117 Nighthawks and AH-1 Cobras, firing numerous bullets at each other. After the air battle ends with no winners, Bertram resorts to biological warfare, and infects Stewie with chickenpox. After recovering, an enraged Stewie confronts Bertram, and they engage in a sword fight in the play area. Stewie eventually wins by disarming Bertram, and later that night, is seen suspiciously digging a hole with Christopher Moltisanti, but the hole is actually for a young tree. Stewie explains to Christopher that Bertram admitted defeat to Stewie and ran away.


The song performed after Lois' pregnancy test comes back negative was written by Alec Sulkin and Alex Borstein, and sung by professional Hollywood studio singers. Orchestrations in this song were performed by Walter Murphy, and described by show producer Seth MacFarlane to be "wonderful". The sketch of Peter challenging Lois to a race to Boston was removed from television broadcasting in order to save time. As Lois is slowly racing Peter to Boston, a Shania Twain song can be heard on the radio; Dan Povenmire states on the DVD commentary that he often gets into trouble for adding pieces of music into an episode when they're so short, yet cost so much. The producers of both Family Guy and the Ice Age series agreed to collaborate in the episode during its reference to Scrat from the Ice Age series.

There was discussion among the producers of the series regarding whether Bertram should be included in the storyline, as he had not appeared in any episodes for several years. An un-used scene was intended for broadcasting which showed Stewie, while trying to find Waldo in an Abercrombie & Fitch catalog, saying to Brian "Oh, turn to the next page. I bet they put him in someone's utility pocket", but it was never used as it was not deemed funny enough for the episode. Originally, Peter singing "Milkshake" to inmates at a prison was going to be naked and push his nipples from underneath, but broadcasting standards objected; as a result, the show broadcast Peter wearing underpants and pushing his nipples from the side. When Peter and Lois are in the restaurant and Peter leaves to "warn the chef of Lois' arrival", Lois was intended to say "If he won't put something in me, I will", but the gag was never broadcast.

The unsafe homeless man with whom Peter was seen leaving a youth-baseball team in Stewie's flashback was originally based on John Wayne Gacy, but people claimed he didn't look scary enough, so Povenmire changed the character completely to that of a homeless man. The idea of Stewie and Bertram laughing as they go down the slide during their sword fight was pitched by Povenmire's wife and, although negative about the idea at first, Povenmire included it in the episode because the original sketch was not going so well. During Peter and Lois' "fat sex", Peter repeatedly states "almost, almost"; originally, there was going to be approximately twice as many of these, but they were never included in the episode. The DVD version of the episode shows Peter arriving at the sperm bank and saying to the receptionist: "I have an appointment to banish a White Russian from my Kremlin", to which she replies with "This is a sperm bank, you don't have to use innuendo", and Peter concludes the conversation with "Where do I splooge?".

In addition to the regular cast, actors Randy Crenshaw, Gavin Dunne, Bob Joyce, John Joyce, Rick Logan, and Wallace Shawn, and voice actors Phil LaMarr, Tara Strong, Nicole Sullivan, and Wally Wingert guest starred in the episode. Recurring voice actor Ralph Garman, and writers Mike Henry, Chris Sheridan, Danny Smith, Alec Sulkin, and John Viener made minor appearances. Actor Patrick Warburton appeared in the episode as well.


"Sibling Rivalry" was watched by 7.95 million viewers, making it the 77th most-watched program of the week. In a review of the episode, Bob Sassone of TV Squad noted "If there's one reason I'm glad I watched tonight's episode it's because I learned exactly how a vasectomy is done," adding that "Peter is going to have a vasectomy, so he decides to freeze his sperm before he does it. This leads to a hysterical, yet truly gross, scene where Peter knocks over an entire shelf of sperm samples, and has to refill them, um, himself." Geoffrey D. Roberts of Real Talk Reviews reviewed the episode negatively, writing "many viewers will probably be disappointed with an episode about sibling rivalry between Stewie and newfound half-brother Bertram. Both share the same goal – to rule the Universe. With Bertram nothing more than a whinier version of his half-brother, it turns out one Stewie Griffin is more than enough."


Sibling Rivalry (Family Guy) Wikipedia