Global warming activist Greta Thunberg has trolled President Trump after he told the teen to 'chill' and 'work on her anger management problems'.

The 16-year-old, who was named Time magazine's 'Person of The Year', updated her Twitter bio on Thursday to read: 'A teenager working on her anger management problem. Currently chilling and watching a good old fashioned movie with a friend.'

Her bio was a verbatim echo of Trump's tweet about her earlier in the day, in which he reacted to news that the publication had awarded the accolade to Thunberg instead of him.

'So ridiculous,' the Commander-in-chief wrote. 'Greta must work on her Anger Management problem, then go to a good old fashioned movie with a friend! Chill Greta, Chill!'

Thousands of Twitter users rushed to applaud Thunberg after she changed her bio to mock the President.

Great Thunberg trolled Trump on Thursday by using his attack on her as the basis for her humorous Twitter bio

Many praised the teenager for outmaneuvering Trump on Twitter - who is widely seen as one of the platform's most skillful and effective users.

By lunchtime the hashtag #GretaOutdidTrump was trending on the social media platform, with one popular response reading: 'A 16-year old with Asperger's and non-native English speaker has better social and communications skills than the current President of the United States. And better Twitter game.'

Another wrote: 'Interesting how a leader that acts like a child is yelling at a child who acts like a leader'.

It's not the first time Thunberg has used her Twitter bio to deftly turn Trump's attacks back around.

In September, Greta described herself as a 'very happy young girl looking forward to a bright and wonderful future' after the President sarcastically said of her UN Speech: 'She seems like a very happy young girl looking forward to a bright and wonderful future. So nice to see.'

Meanwhile, the President insists he wasn't petty about losing out as Time magazine's person of the year.

When asked Wednesday if the White House had a comment about the Commander-in-chief losing the honor to Thunberg, White House Principal Deputy Press Secretary Hogan Gidley emailed DailyMail.com: 'Huh?!?'

It's not the first time Thunberg used her Twitter bio to deftly turn Trump's attacks of her back around

Time named Thunberg its 2019 'Person of the Year,' putting her above Trump and House Speaker Nancy Pelosi

Thunberg is the magazine's youngest-ever Person of the Year, a title that still sparks Internet curiosity one day each year despite the steep decline of magazine sales.

The teen girl with Asperger's syndrome is the face of the youth climate movement, drawing large crowds with her appearances at protests and conferences since last year.

Her angry accusations that world leaders are failing the younger generation have made headlines, including her shouts of 'How dare you?' during the UN General Assembly this year.

An image of her staring at Donald Trump as he entered the UN quickly became a social media meme.

Trump has said he doesn't believe global warming is mainly caused by humans. During the 2016 campaign he claimed it was a 'hoax' promoted by China in order to gain economic advantage over the United States.

The president has since withdrawn the U.S. from the Paris Climate Treaty.

Time editor-in-chief Edward Felsenthal told the Today show: 'She became the biggest voice on the biggest issue facing the planet this year, coming from essentially nowhere to lead a worldwide movement.'

Politicians have mostly praised Thunberg and her movement as an important voice of her generation.

The schoolgirl was seen at UN headquarters in September with an enraged expression on her face as President Trump upstaged her entrance by walking in flanked by news reporters

Former Vice President Al Gore said Wednesday: 'Brilliant decision for @TIME to choose @GretaThunberg as its Person of the Year.

Short list for TIME's 2019 Person of the Year House Speaker Nancy Pelosi - central to the impeachment proceedings against Donald Trump. President Donald Trump - named TIME Person of the Year in 2016 and the 45th president of the United States. The Whistleblower - the anonymous CIA officer who reported Trump's call with Ukrainian president Volodymyr Zelensky The Hong Kong Protesters - mass protests first erupted in June against planned legislation that would have allowed criminal suspects to be extradited to mainland China for trial in Communist Party-controlled court. Greta Thunberg - winner Advertisement

'Greta embodies the moral authority of the youth activist movement demanding that we act immediately to solve the climate crisis. She is an inspiration to me and to people across the world,' Gore said.

Felsenthal said Thunberg 'represents a broader generational shift in the culture,' adding: 'She embodies youth activism.'

The magazine says: 'In the 16 months since, she has addressed heads of state at the U.N., met with the Pope, sparred with the President of the United States and inspired 4 million people to join the global climate strike on September 20, 2019, in what was the largest climate demonstration in human history.'

'For sounding the alarm about humanity's predatory relationship with the only home we have, for bringing to a fragmented world a voice that transcends backgrounds and borders, for showing us all what it might look like when a new generation leads, Greta Thunberg is TIME's 2019 Person of the Year,' the media franchise said Wednesday on its website.

Thunberg's accusations that leaders are failing younger generations have made headlines, including her shouts of 'How dare you?' at the U.N. General Assembly