Last year, on the eve of April Fools' Day, Jimmy Fallon did a joke about Donald Trump.
From March 31, 2016:
JIMMY FALLON: Tomorrow is April Fools Day, which means everyone will be waiting for Donald Trump to finally say, 'Gotcha! April Fools!'
One year ago, I didn't think Trump had any chance of becoming president of the United States. I was so wrong.