In his press conference on Friday, Trump did something that pretty much everybody expected him to do: he called James Comey a liar. This is standard operating procedure for Donald Trump; he always insults, defames, and otherwise seeks to destroy anyone who he feels is attacking him. But a Slate piece from yesterday brought up a new wrinkle, something that, perhaps, Trump has not had to deal with before: Donald Trump just accused James Comey of lying under oath. This is a serious charge. Perjury is a federal crime. You can go to jail for committing perjury. What if people start demanding that Trump back up his charges, and actually take Comey to court? This puts Trump into a bind -- he'll either have to come up with some excuse and back down (thus letting a person he "believes" is a perjurer go free), or to double down on his assertion, and actually try to prove that Comey lied (which, of course, will mean that Trump himself will have to find some proof that Comey lied; and I'd love to see him do that). Maybe, finally, Trump will be cornered into a "put up or shut up" position. The world has always allowed him to get away with his endless bullying to get his way; but perhaps the justice system can finally give this petulant child a spanking for all the crap that comes out of his mouth.