Did Obama Just Make an Assassination Reference?

During an oddly jokey statement at the White House as the fiscal deadline bore down Monday afternoon, President Obama said, "I'm going to be president for the next four years. I hope." He was warning Republicans that, yes, they'd have to deal with him for a while. But it was, to be sure, a strange moment. Could he actually have been joking about assassination? About impeachment? The apocalypse ...