Donald Trump, former reality TV star and current leader of the free world, recently gave an interview with The Economist, during which he inexplicably decided he'd invented the phrase "priming the pump." Which, to be clear, he did not.
As you can see, Trump seems more than convinced his brain is responsible for this phrase. However, as Merriam-Webster points out, "priming the pump" dates back to the 19th century.
And people are rightfully amused.
Laughing, but also crying.