Jarodian is an adjective for loud, obnoxious and/or knobbish behavior. Originates from the phrase- "being a jared".
Take the situation where you are at a party and someone continuously draws attention to themselves for overly-macho or excessively stupid behavior. A guy who loudly heckles speechmakers with unfunny and inappropriate jokes. Or someone who tells ridiculous lies, full-thinking he has conned the listener into believing he is cool, when in fact that person cannot wait to get away and knows they're having to put up with jarodian yarns.