Amid ongoing tensions over the results of the US presidential election, Swedish environment activist Greta Thunberg has mocked US President Donald Trump in his own words in the ultimate social media revenge.

Social media lauded Greta's response, which has garnered over 1 million likes and nearly 300,000 retweets. The teen activist trolled Trump over his "stop the count" tweet. The 17-year-old tweeted saying, "So ridiculous. Donald must work on his anger management problem, then go to a good old fashioned movie with a friend! Chill, Donald, Chill."

Greta Thunberg

The tweet was the exact copy of the one that Trump posted in December 2019 criticising the Time magazine's decision to name her "Person of the Year".

The US President wrote, "So ridiculous. Greta must work on her Anger Management problem, then go to a good old fashioned movie with a friend! Chill Greta, Chill!"

"If you count the legal votes, I easily win": Trump alleges election fraud

The development comes as President Trump has made controversial broad allegations of voter fraud in Tuesday's election.

"If you count the legal votes, I easily win," the President told reporters at the White House earlier on Thursday, implying that some of the postal ballots, the counting of which he was trying to stop was illegal.

"If you count the illegal votes, they can try to steal the election from us. If you count the votes that came in late, we're looking at them very strongly, but a lot of votes came in late. "This is a case where they're trying to steal an election, trying to rig an election."

Trump's allegations about election fraud brought immediate condemnation from the media, almost all of which labelled it "false", and politicians in Republican and Democratic parties.