birdbrain, a blockhead, a bonehead, a boob, a bozo, a charlatan, a cheat, a chowderhead, a chump, a clod, a con artist, a crackpot, a crank, a crazy, a cretin, a dimwit, a dingbat, a dingleberry, a dipstick, a ditz, a dolt, a doofus, a dork, a dum-dum, a dumb-ass, a dumbo, a dummy, a […]

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