A Jew who isn't good at normal Jew stuff, like being rich and being a tightwad and starting all the wars and killing jesus. A lackluster Jew.
Mort Goldman on Family Guy is a Jewbroni.
by Doughboy619 October 16, 2009
Someone that is Jewish and Italian
That jewbroni is orthodox and wouldn't appreciate pepperoni on his pizza
by B0b L0blaw September 24, 2010