laughingstock(n = noun.person) butt, goat, stooge - a victim of ridicule or pranks;
is a kind of dupe, victim
has particulars: april fool

   An object of ridicule; a butt of sport. Shak. [1913 Webster]
"When he talked, he talked nonsense, and made himself the laughingstock of his hearers." [1913 Webster]

N  ridiculousness, comicality, oddity, extravagance, drollery, farce, comedy, burlesque, buffoonery, frippery, doggerel verses, absurdity, bombast, anticlimax, bathos, eccentricity, monstrosity, laughingstock, ridiculous, ludicrous, comical, droll, funny, laughable, pour rire, grotesque, farcical, odd, whimsical, whimsical as a dancing bear, fanciful, fantastic, queer, rum, quizzical, quaint, bizarre, screaming, eccentric, strange, outlandish, out of the way, baroque, weird, awkward, extravagant, outre, monstrous, preposterous, bombastic, inflated, stilted, burlesque, mock heroic, drollish, seriocomic, tragicomic, gimcrack, contemptible, doggerel, ironical, risible, risum teneatis amici, rideret Heraclitus, du sublime au ridicule il n'y a qu'un pas.

N  laughingstock, jestingstock, gazingstock, butt, game, fair game, April fool, original, oddity, queer fish, odd fish, quiz, square toes, old monkey, old fogey, fogey monkey, fogy monkey, buffoon, pantomimist, schlemiel, jest, dum vitant stulti vitia in contraria currunt.

N  dupe, gull, gudgeon, gobemouche, cull, cully, victim, pigeon, April fool, jay, sucker, laughingstock, Cyclops, simple Simon, flat, greenhorn, fool, puppet, cat's paw, credulous, mistaken.