US President Donald Trump's late night tweets have often been a source of interest, but none more so than Tuesday evening's bizarre post which caused the internet to explode.

The reason? One 'word': "Covfefe".

President Trump began the tweet in the usual fashion, seeming to be giving out about "constant negative press", but finished the sentence abruptly with the nonsensical word.

The tweet featuring the apparent typo garnered over 130,000 retweets and 103,000 likes when it was finally deleted, about 6 hours after Trump posted it.

He has now taken to his official Twitter page once-more, asking his 31 million followers, "Who can figure out the true meaning of "covfefe"??? Enjoy!"

Of course, Twitter had a field day as people tried to get to the bottom of the "covfefe" mystery.

Meanwhile, some Twitter users joked that Kathy Griffin would be thankful for detracting attention from her Donald Trump photo controversy.

Other Twitterers wondered how White House press secretary Sean Spicer would handle the 'covfefe' dramz.

The Merriam-Webster dictionary, which has a history of fact-checking Trump's tweets, decided to give this one a miss.