Polish President Andrzej Duda's wife Agata Kornhauser - Duda appeared to snub US President Donald Trump as he offered his hand to her but the Polish First Lady missed him out in favour of his wife Melania Trump.
The awkward moment was caught on camera when the Polish couple was on Thursday welcoming their US counterparts to the country.
The video footage shows Trump and Melania standing on stage with Duda and his wife Kornhauser - Duda.
As the four were exiting the stage, Trump and Duda exchanged a handshake.
Trump then extended his hand to Kornhauser - Duda, who ignored the gesture and instead simply shook Melania's hand, before turning to shake the US President's hand after all.
The former business mogul frowned and looked shocked and confused before quickly dropping his hand.
The President's handshake has become a defining characteristic of the first year of his White House reign as he has on numerous occasions made headlines for his awkward power shakes while meeting the world leaders.
He drew international headlines for declining to shake the hand of German Chancellor Angela Merkel when she visited the White House earlier this year.
French President Emmanuel Macron described their first encounter as a "moment of truth" after the pair met at a Nato summit in Brussels.
"My handshake with Donald Trump - - it wasn't innocent, " he said.
His handshakes with Canadian Prime Minister Justin Trudeau and Japanese Prime Shinzo Abe were also the subject of thorough analyses on the internet.
The twitterati were quick to react as the footage went viral on the internet.
Some people were, however, quick to point out that the duo had already shaken hands a few minutes earlier before they posed for a photo.
"I love that this failed Trump handshake in Poland is already a gif.
Thank you, millennials, " a user wrote.
"Another handshake fail for Trump thanks to the Polish First Lady, " another mentioned.
Although it certainly appeared to be a deliberate snub, a longer version of the incident shows Kornhauser - Duda shaking the President's hand immediately after the First Lady's.