But, but--all the selections here are in a-order:
a jeering one - bellyacher, buffoon, dolt, dunderhead,
galoot, gasbag, greenhorn, half-wit, idiot, imbecile, jackass, loony, moron,
nincompoop, pinhead, poltroon, popinjay, quack, rube, sap, simpleton, snot,
windbag, wretch, yahoo, yokel, or zealot. Third, add an adjective
(optional). Brazen, fuliginous, gaseous, gimcrack, maudlin, meretricious,
piffling, portentous, sophomoric, puerile - any of these will do. Fourth,
accuse the person of engaging in bibble-babble, claptrap, flapdoodle,
flumdiddle, hokum, moonshine, pishposh, rumble-bumble, pronunciamentos, or
tosh.

Ack--why all the weird spacing?
And--is whistle-brained the same as airhead?
EDIT--even weirder (to me): when I copied the above, and now again as I'm editing it, the quote has about 3 times as many lines as show up in public; many with just one word.