"Which nut job decided to ruin a beautiful day in Sydney with this?" asked University of Sydney academic Professor Tim Stephens.
He created his own doctored version which predicted Trump's eventual loss.
But NewsCorp columnist Rita Panahi, who is currently in quarantine in a Sydney hotel, tweeted that she found the message quite funny.
In the US, the convulsions over the disputed election continue.
Trump briefly attended a rally being held in his name in Washington DC on Saturday.
Several thousand Trump supporters descended on the capital city urging Trump not to concede the election amid unproven claims of electoral fraud.
The so-called Million MAGA March didn't attract anywhere near that number of people but about 10,000 supporters of the President made their feelings known that they want to see Trump remain in office.
