Every single person is a fool, insane, a failure, or a bad person to at least ten people.
Mokokoma Mokhonoana
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