There's a difference between knuckle-draggers and actual loonies though. Generally knuckle-draggers do so because they have no discernible talent so they make up for it with thuggery (and strangely get lauded for it in the English press while Wenger gets called a whining ninny for picking them up on it). But Suarez doesn't need to do things like this, he's one of the best players in the world. He's just a complete hat-stand.