The stranger-than-sitcom American presidency opened 2018 with a big tease about mutual nuclear destruction from two leaders who then found "love" not war. It seems President Donald Trump and North Korea's Kim Jong Un were just playing hard to get.The presidency ends the year saturated in tumult, with the government in partial shutdown and Trump tweeting a video of himself warbling a parody of the theme song from "Green Acres," a television sitcom from the 1960s, to mark his signing of a farm bill. Throw in a beer-loving and very angry Supreme Court nominee, an unhappy departing defense secretary, Trump's parallel universe of facts and his zillion tweets, and you can see that the president's world this year was touched by the weird, the traumatic and the fantastical — also known as WTF. There was no holding back the self-described "very stable genius" with the "very, very large brain." Some serious and relatively conventional things got done in 2018.