Sibling Rivalry/Goofs

• The basso singer of the barbershop quartet is blonde for the beginning of the musical number, but for one close up shot of him shortly after Peter asks 'But how is it done?', he has ginger hair, but in the next shot of him when he pokes his head under the chair, he is blonde again.
  
• During the massive air fight, Stewie points to three buttons in his fighter that operate the take-off and missiles, however when in the air, he uses a control stick more typical of a jet. Also, jets traditionally outmatch helicopters in a firefight, yet eventually it comes down to just Stewie and Bertram stuck in two different trees while playing 20 Questions because of their parachutes.

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