schlemiel(n = noun.person) shlemiel - (Yiddish) a dolt who is a habitual bungler;
is a kind of simple, simpleton

schlemiel, n. US colloq. a foolish or unlucky person.

Etymology:
Yiddish shlumiel

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.