Teen climate activist Greta Thunberg poked fun at President TrumpDonald TrumpNYT: Rep. Perry played role in alleged Trump plan to oust acting AG Arizona GOP censures top state Republicans McCain, Flake and Ducey Biden and UK prime minister discuss NATO, multilateralism during call MORE’s calls to stop vote counts, using his own words from a 2019 tweet.

“So ridiculous. Donald must work on his Anger Management problem, then go to a good old fashioned movie with a friend! Chill Donald, Chill!” the 17-year-old Swedish activist tweeted, in response to a tweet from the president reading “STOP THE COUNT!”

The tweet was a reference to one the president sent in December 2019 with the same phrasing criticizing Time’s decision to name her “Person of the Year.”

Thunberg has poked fun at the president’s criticisms of her in the past, including briefly changing her Twitter biography to “teen working on her anger management problem” after the president’s tweet.

After Trump sarcastically called her “a very happy young girl looking forward to a bright and wonderful future,” she also temporarily added the description to her bio. She made a similar move when far-right Brazilian president Jair Bolsonaro attacked her as a “brat.”