These have to be the best lines in Stephen Colbert's Knox College commencement address: "So we must build walls. A wall obviously across the entire southern border. That’s the answer. That may not be enough—maybe a moat in front of it, or a fire-pit. Maybe a flaming moat, filled with fire-proof crocodiles… It’s time for illegal immigrants to go—right after they finish building those walls. Yes, yes, I agree with me."