How hard can it be to go to dictionary.com and look it up?

Here....I did it for you.

[blockquote]Word History[/b][/i]: One can readily see that debunk[/i] is constructed from the prefix de-,[/i] meaning "to remove," and the word bunk.[/i] But what is the origin of the word bunk,[/i] denoting the nonsense that is to be removed? Bunk[/i] came from a place where much bunk has originated, the United States Congress. During the 16th Congress (1819-1821) Felix Walker, a representative from western North Carolina whose district included Buncombe County, carried on with a dull speech in the face of protests by his colleagues. Walker later explained he had felt obligated "to make a speech for Buncombe." Such a masterful symbol for empty talk could not be ignored by the speakers of the language, and Buncombe,[/i] spelled Bunkum[/i] in its first recorded appearance in 1828 and later shortened to bunk,[/i] became synonymous with claptrap.[/i] The response to all this bunk seems to have been delayed, for debunk[/i] is not recorded until 1923.[/blockquote]

Figures.....a man from NC originated "bunk"