Greta Thunberg Trolled Climate Change Deniers on Her 18th Birthday

Greta Thunberg Trolled Climate Change Deniers on Her 18th Birthday

The T-shirt, though.

Greta Thunberg spent her 18th birthday doing one of the things she does best — issuing a slam dunk on Twitter.

Having proved her excellent trolling prowess with some A+ responses to Donald Trump in the past, the climate activist used the occasion of her 18th birthday to turn to climate change deniers (who still exist, for some reason).

"Thank you so much for all the well-wishes on my 18th birthday!" she wrote on Sunday. "Tonight you will find me down at the local pub exposing all the dark secrets behind the climate- and school strike conspiracy and my evil handlers who can no longer control me! I am free at last!!"

If the caption wasn't enough, Thurnberg drove home the message with her T-shirt, which read, "Flat Mars Society."

In November, Thunberg proved her capacity for the long-game clapback, using one of Trump's tweets mocking her to drag him over the election results.

In response to Trump's tweet calling for a halt to votes being counted in the presidential election, Thunberg wrote, "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 tweet was an almost word-for-word callback to the time Trump attacked her after she was named Time's Person of the Year (tweeting, "So ridiculous. Greta must work on her Anger Management problem, then go to a good old fashioned movie with a friend! Chill Greta, Chill!").

RELATED: Greta Thunberg Trolled Donald Trump's Post-Election Meltdown With His Own Words

When asked by The Sunday Times about her ideal birthday gift, Thunberg said she wanted a "promise from everyone that they will do everything they can" for the planet.

What better way to start 2021 than a promise to do better for us all?