Nimrod : From legendary hunter to idiot

So how did the great Nimrod, king of Shinar, reputed visionary of the Tower of Babylon and legendary hunter, became synonymous with idiot?

From wiki:

"In most English-speaking countries, Nimrod is used to denote a hunter or warrior, because the biblical Nimrod is described as "a mighty hunter". In American English, however, the term has assumed a derogatory meaning, probably because of Bugs Bunny's references to Elmer Fudd as a "poor little Nimrod". While this was most likely using the term's "hunter" sense, it contributed to the development of a sense "one who was easily confounded"."

I wonder how Nimrod himself would feel about his legacy tarnished by...a cartoon!