What's he eating?

Twitter seems to think it's candy, chocolate or even Snickers specifically. I'd like to think it's a more appropriately named candy bar, like Payday or 100 Grand. Then again, maybe Rand is just a real-life troll and he is snickering internally at his own efforts. Let's stick with Snickers. Plus there's that whole "Not going anywhere for awhile?" thing too. Again, there are some serious missed opportunities for product placement and corporate sponsorship in this filibuster.