Foolery1. (n.) The behavior of a fool; absurdity; lunacy.
2. (n.) An act of folly or weakness; a foolish practice; something absurd or nonsensical.
Thesaurus Entries
Parthian shot, asininity, back answer, banter, battiness, brainlessness, buffoonery, caustic remark, clownishness, comeback, crack, crackpottedness, crankiness, craziness, cut, cutting remark, daffiness, desipience, dig, dump, eccentricity, fatuity, fatuousness, fleer, flout, folly, foolheadedness, fooling, foolishness, frivolity, frivolousness, gibe, gibing retort, giddiness, goofiness, harlequinade, horseplay, idiocy, imbecility, inanity, ineptitude, insanity, jab, jape, jeer, jest, leg-pull, lunacy, madness, mindlessness, mock, monkeyshines, niaiserie, nugacity, nuttiness, parting shot, put-down, put-on, queerness, quip, rude reproach, sappiness, scoff, screwiness, scurrility, senselessness, shenanigans, short answer, silliness, slam, slap, stupidity, swipe, taunt, thoughtlessness, tomfoolery, triflingness, triviality, twit, verbal thrust, wackiness, weirdness, witlessness, zaniness, zanyism