All politicians are subject to rumours and recrimination.
But few have had to answer for the sort of tall tales being told about the President of Nigeria, Muhammadu Buhari, who over the weekend denied claims that he had died and been replaced by a Sudanese impostor.
"It's the real me, I assure you," Buhari said at a town hall in Poland, where he was attending a United Nations climate conference. "I will soon celebrate my 76th birthday and I will still go strong."
With that declaration, Buhari broke his silence about a rumour that had taken root on social media last year, when he was away in London being treated for an undisclosed illness.
The theory went that the President, who is running for re-election in February 2019, had been swapped out with a look-alike from Sudan named Jubril - even that he was "cloned," as he put it in relaying the rumour to his nearly two million followers on Twitter.