If ever there was a one-joke movie, this is surely it. But what a joke! Phyllis Diller claims she fainted when she first heard it, while rumor has it that Michael O'Donoghue once told the joke nonstop for 90 minutes at a party at Chevy Chase's house. Known as "The Aristocrats" and traditionally an inside joke in the comics' community, it always starts the same way — "A man walks into a talent agent's office..." — and ends with the same punch line: "The Aristocrats." What comes in between and how long the joke lasts is left to the discretion — or rather, indiscretion — of the teller, but any good version involves all known bodily fluids and every sexual perversity ima...