A clip of this question became viral on Twitter and has got more than 154,000 likes.
On Friday afternoon, the climate activist changed her name to Sharon, a day which also marked his birthday.
This is not the first time Thunberg has had the last laugh on social media.
Last month, US President Donald Trump also tweeted that the Swedish activist needs to work on her anger management problemt and "then go to a good old fashioned movie with a friend! Chill, Greta, Chill!"
Responding to the US President, Thunberg edited her bio which then said "a teenager working on her anger management problem. Currently chilling and watching a good old fashioned movie with a friend".
Earlier too, Thunberg responded wittingly to the US President when he commented in a video: "She seems like a very happy young girl looking forward to a bright and wonderful future."
Thunberg changed her bio which said "A very happy young girl looking forward to a bright and wonderful future".
In October, Thunberg changed her bio to "a kind but poorly informed teenager" which is exactly how Russian President Vladimir Putin had earlier described her.