Donald Trump Says Greta Thunberg Should 'Chill,' Go To Movies; Here's How She Responded

US President Donald Trump on Thursday slammed Time magazine's naming of Greta Thunberg as 2019 Person of the Year, saying the climate activist should "chill" and go see a movie. "So ridiculous. Greta must work on her Anger Management problem, then go to a good old fashioned movie with a friend! Chill Greta, Chill!" he tweeted.

Thunberg responded to Trump's comment by changing her Twitter bio to "a teenager working on her anger management problem. Currently chilling and watching a good old fashioned movie with a friend."

Trump's diss came after TIME on Wednesday honoured 16-year-old Thunberg, who last year launched a solo "School Strike for the Climate," or "Fridays For Future," protest against global warming that has since grown into a worldwide movement and seen her tipped as a potential Nobel laureate.

Earlier, Greta Thunberg had briefly changed her Twitter bio to "pirralha" after Brazilian President Jair Bolsonaro used the term - a derogatory Portuguese word meaning brat - to describe her.

"Greta has said that the Indians died because they were defending the Amazon. It's amazing that the press gives space to this kind of pirralha," Jair Bolsonaro had told reporters in Brasilia. Bolsonaro's statement was in response to a tweet by Thunberg that referred to the death of two indigenous men of the Guajajara tribe.

"Indigenous people are literally being murdered for trying to protect the forest from illegal deforestation. Over and over again. It is shameful that the world remains silent about this," Thunberg had tweeted on December 8.

Thunberg has become known for her fiery speeches to world leaders, and was on Wednesday in Madrid, where she accused rich countries of "misleading" people into thinking they are taking meaningful action against climate change.

In perhaps her most iconic appearance, she laid in to world leaders at another UN climate summit in September, thundering "How dare you?" for failing to take action to stop runaway global warming. Her rhetoric, youth and diagnosis of Asperger's syndrome, a mild form of autism, have made her a frequent target of critics.