The phrase “Prince of Whales” became a trending topic on Twitter Thursday morning after a tweet from President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE in which he misspelled the title of the United Kingdom's Prince Charles.

“I meet and talk to ‘foreign governments’ every day," the president tweeted. "I just met with the Queen of England (U.K.), the Prince of Whales, the P.M. of the United Kingdom, the P.M. of Ireland, the President of France and the President of Poland. We talked about ‘Everything!’”

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Trump recently met with Prince Charles, the prince of Wales, during his state visit to the U.K. earlier this month.

Trump's tweet was meant to defend comments he made in an interview Wednesday, during which he told ABC’s George Stephanopoulos George Robert StephanopoulosColbert implores Pelosi to update 'weaponry' in SCOTUS fight: 'Trump has a literal heat ray' Murkowski: Supreme Court nominee should not be taken up before election Cruz says Senate Republicans likely have votes to confirm Trump Supreme Court nominee MORE that he would listen to a foreign entity with damaging information on a political opponent, equating it with his diplomatic contacts with foreign leaders. FBI Director Christopher Wray has said contacting the FBI would be the correct protocol.

Though he quickly issued a new tweet with the correct spelling, Twitter users had already jumped on the president's gaffe.

Hazel Shearing, a BuzzFeed UK reporter, jokingly shared the “first photos in from Trump’s meeting with the Prince of Whales.”

First photos in from Trump's meeting with the Prince of Whales pic.twitter.com/MclQIT9G2A — Hazel Shearing (@hazelshearing) June 13, 2019

CNN commentator Keith Boykin tweeted: “When the very stable genius in the White House tweets about the Prince of Whales. ”

When the very stable genius in the White House tweets about the Prince of Whales. pic.twitter.com/bJJXt5S2W7 — Keith Boykin (@keithboykin) June 13, 2019

Dictionary.com’s official twitter account provided a helpful guide for social media users.

Wales is a division of the United Kingdom. Whales are not. https://t.co/RVPi55qGp4 — Dictionary.com (@Dictionarycom) June 13, 2019

Others chimed in with their own jokes and memes mocking the president's spelling.

DOES THE PRINCE OF WHALES RULE OVER DOLPHINS TOO? pic.twitter.com/hgbI10VrSs — The Volatile Mermaid (@OhNoSheTwitnt) June 13, 2019

"When I met with the Prince of Whales, he said that as president, it was my life's porpoise to build the wall. I told him wait till you sea it." — hend amry (@LibyaLiberty) June 13, 2019

The phrase was shared more than 20,000 times on Twitter as of Thursday morning and was the No. 1 trending topic in the U.S.