In September, Christie looked directly into the camera and declared that if Trump keeps skipping debates, he would deserve a new nickname: “Donald Duck.”

I remember the Clinton campaign had something about “Donald Duck” because of his refusal to publish his tax returns. Maybe it was sending someone in a Donald Duck costume to his rallies? I don’t know, the joke always kinda fell flat. It made sense when you explained it, but then it’s not funny, is it?