Ever seen Jamie Dimon, wearing his presidential cufflinks, stretch, bend and break the truth in front of Congress? The guy, and by implication JPMorgan, is unflappable. There is nothing in this world that could dent his cool. And yet, we may have just uncovered the weakest link in JPMorgan's armor. The one thing in the world that would make JPM "blink" is...

h/t @Sellputs