Lois discovers that she has a brother. He's a patient in a mental institution, but he doesn't seem unusual--at first.

Meanwhile, Peter's doctor tells him he's overweight, and Peter decides to do something about it: He forms the National Association for the Advancement of Fat People.

original airdate--November 27,2005              rating--9.85 million

Musical Numbers: NAAFP Anthem (DVD only), The Longest Time