Greta Thunberg Celebrates 18th Birthday With a Hilarious Message

Greta Thunberg is celebrating her birthday.

The climate change activist, who turned 18 on Sunday (January 3), celebrated her special day with a photo of herself humorously wearing a “Flat Mars Society” hoodie, mocking the Flat Earther Movement.

PHOTOS: Check out the latest pics of Greta Thunberg

“Thank you so much for all the well-wishes on my 18th birthday! 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!!” she amusingly captioned the post, addressing the various conspiracy theories about her activism.

She also recently said something on Twitter that made headlines to the President of the United States amid his election fraud claims.