airhead aphorism aphorisms aphorist aphorists around-the-bend ass bad bad-people bad-person bananas batty birdbrain blockhead bonkers boob bozo brainless buggy bushed certifiable chowderhead chowderheaded chump clod coot crack-brained cracked crackers crackpot crazed crazy cretin cuckoo daft dead-loss demented deranged dim dimwit dimwitted dingbat dipstick disappointment disturbed ditz dolt donkey dope dork dud dullard dumb dumb-ass dumb-cluck dumbhead dumbo dumdum dummy dunce dunderhead fail failure fathead flake fool foolhardy foolish funny galoot goat goober goof goofball goofus goon half-baked halfwit halfwitted harebrained hilarious humor humorous humour idiot idiotic ignoramus ill-advised ill-considered imbecile impolitic imprudent incautious informal-no-hoper injudicious insane insanity jerk joke jokes jughead klutz lamebrain loco loony loopy loser lummox mad mad-as-a-hatter meatball mentally-disordered mentally-ill mindless moron nerd nincompoop ninny nitwit non-compos-mentis not-all-there numbnuts numbskull nuts of-unsound-mind pea-brained peabrain psycho psychotic putz quotations quotes rash reckless sap satire schizophrenic schlemiel schlep schmuck screwy silly simpleton stark-raving-mad stupid thick thickhead thoughtless turkey twerp twit unbalanced underachiever unhinged unintelligent unstable unwise wacko witless wooden-headed write-off zombie