what is 'you only move twice'?
The second episode of "The Simpsons" eighth season.
You Only Move Twice
"You Only Move Twice" is the second episode of "The Simpsons" eighth season. It first aired on the Fox network in the United States on November 3, 1996. 
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You Only Move Twice [SEP] Introduction
"You Only Move Twice" is the second episode of "The Simpsons" eighth season. It first aired on the Fox network in the United States on November 3, 1996. The episode, based on a story idea by Greg Daniels, has three major concepts: the family moves to a new town; Homer starts to work for a friendly, sympathetic boss; and that boss, unbeknownst to Homer, is a supervillain. Bart, Lisa, and Marge each have individual secondary storylines. John Swartzwelder wrote the episode which was directed by Mike B. Anderson. The episode's title is a reference to the James Bond film "You Only Live Twice".