Last night, the Nerd Prom—the White House Correspondents Dinner—took place, giving President Obama a chance to skewer the D.C. media and his colleagues on both sides of the aisle. He also took aim at himself, “I usually start these dinners with a few self-deprecating jokes, but after my stellar 2013, what could I possibly talk about? At one point, things got so bad the 47 percent called Mitt Romney to apologize.” Obama continued, “We rolled…