TRUMP:" Have you heard that expression used before? Because I haven’t heard it. I mean, I just … I came up with it a couple of days ago and I thought it was good. It’s what you have to do."

Asking an Economist writer if he or she has heard the expression “prime the pump” is like asking Sports Illustrated writers if they’ve heard of “RBIs” or asking someone at Playboy if they’re aware that you can have your body surgically enhanced. Of course they have heard the term, because Trump, contrary to what he suggests, didn’t invent the phrase, much less come up with it “a couple of days ago.”