Top Definition
Important precondition for attaining the role of chief of the executive wing of government, not least in the United States. More or less quote/unquote, "You can't become President with an entire brain." From the movie of The Hitchhiker's Guide to the Galaxy.
Al Gore and John Kerry almost made it, but they were both scuppered by the Zaphod Clause.
by Fearman August 25, 2007
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