Boris Johnson is no stranger to bizarre stories but this one has to be one of our favourites.
As he launched his campaign to replace Theresa May as British Prime Minister, he revealed that he recently mistook a call from the US president for a hoax.
Speaking to the UK's Sunday Times, Mr Johnson revealed what happened when Donald Trump called him for a chat.
"The person had a mild Irish accent and said 'This is the No 10 switchboard, we have got the president of the United States for you. I am just going to patch you through to the White House situation room,'" Mr Johnson told the newspaper.
Thinking as quickly as I do, I said, 'To all our listeners on Radio Kilkenny, I was not fooled for an instant.'
He then hung up the phone and called Downing Street only to discover that it had, in fact, been Mr Trump on the phone.
Since the story was printed, CRKC/Radio Kilkenny say that lots of people have been in touch with them.
"We’re happy to interview Mr Johnson – or President Trump – anytime they want to phone in or come into the studio," they said.
Mr Johnson laughed off the incident and it doesn't appear to have done any harm to his relationship with the US president but he may not be so quick to jump to conclusions again.
What's that saying? 'If you assume...'