Kerry didn't do a gentleman's handshake. It's an old & childish tactic to squeeze your opponents hand too hard & long.
I DL'ed the file and put it on continuous replay and it's definitely no a pen. Not a hanky either. Looks like he unfolds something
It's an old & childish tactic to squeeze your opponents hand too hard & long
but also important when people are taking pictures...and you are 5 inches taller....