The word “Bidan” trended across Twitter on Saturday after President TrumpDonald John Trump Former US ambassador: 'Denmark is not a big fan of Donald Trump and his politics' Senate Democrats push for arms control language in defense policy bill Detroit county sheriff endorses Booker for president MORE tweeted what seemed to be a typo of former Vice President Joe BidenJoe BidenTop adviser on Sanders: 'He's always been underestimated' 'The Simpsons' pokes fun at Trump's feud with 'the squad' 'Forever war' slogans short-circuit the scrutiny required of national security choices MORE’s name.

“North Korea fired off some small weapons, which disturbed some of my people, and others, but not me,” Trump said in a tweet earlier Saturday. 

“I have confidence that Chairman Kim will keep his promise to me, & also smiled when he called Swampman Joe Bidan a low IQ individual, & worse. Perhaps that’s sending me a signal?” he continued.

But after the error, Trump deleted the tweet and reposted another containing the same words minus the misspelling of Biden.

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But by then, hundreds of people had already seized on the mistake.

A number of users also found humor in Trump misspelling the former vice president’s name in a tweet that took aim at Biden's “low IQ.”