Teen climate activist Greta Thunberg dismissed the idea of meeting with President Trump when she appeared on “The Ellen DeGeneres Show” on Friday.

“Would you sit down with him [Trump] to help him understand climate change?” DeGeneres asked the 16-year-old.

“I don’t understand why I would do that,” Thunberg responded matter-of-factly, as the audience erupted in laughter. “”I don’t see what I could tell him that he hasn’t already heard, and I just think it would be a waste of time, really,” according to USA Today.

In September, Trump sarcastically praised the teen for her activism, sharing a clip of her speech at the United Nations. “She seems like a very happy young girl looking forward to a bright and wonderful future. So nice to see!” the president tweeted.