A derogatory term used to describe:
(1) A spurious bro who tries to fit in with genuine bros, but fails
(2) A poser, wannabe or social climber, often marked by overconfidence
Sometimes used by Anglo-Americans to express ethnic distaste or xenophobia, especially toward Italians, Jews, Eastern Europeans and even Irish
Also slang for jabroni
Bro 1: "Look at that j bro over there, what a wop! Who let him in?"
Bro 2: "I wish I knew. What kind of bro rocks an untucked black button down? And hair gel?!"
Bro 1: "A j bro, obviously. And chinstrap sideburns, to boot!"
Super awesome computer nerd who loves riding his bike on Thursdays and has freakishly long legs.
See that J Bro over there on his bike! Man, he sure has some long fucking legs!