Twitter is known for being the most ruthless of the social media platforms. So when a video showing Sebastian Gorka cracking a joke about Greta Thunberg made its rounds, users didn't hesitate to share their thoughts.

During a discussion with Andrew Klavan on the former Trump aide's radio show "America First," Klavan stumbled over the pronunciation of Thunberg's name. Gorka offered up the correct name but not before taking a moment to take a dig at her appearance.

"Whatever her name. What is her name? Greta Thunberg?" Klavan said using an incorrect pronunciation.

"Thunder thighs," Gorka replied. "Greta Thunberg."

While the consensus, socially, is that it's never okay to comment on someone's appearance, the fact that Thunberg is only 17-years-old made the comment that much worse.

"Super-mentally-healthy dude, that Gorka," one Twitter user wrote. "Hey ⁦@SebGorka⁩, stop sexualizing children, you pervy fascist."

Another fired off, "Sebastian Gorka is an ugly mug. Greta’s thigh size is irrelevant. My question is Why is he critiquing a minor’s body?"

"Is he some kind of pervert? Gorka is a crusty & mentally warped human," the tweet continued. "It’s clear that he is jealous of Greta’s thunder."

This isn't the first time Thunberg has been on the receiving end of some questionable remarks but fortunately, it's doesn't look like it will stop her from continuing to speak up about environmental issues.

The Swedish teen is a climate change activist and was even named Time’s Person of the Year. She's gained a lot of notoriety through her work, so much so, that Hulu recently announced it would be making a documentary about her.

Teen Swedish climate activist Greta Thunberg, seen here giving a speech at the COP 25 talks in Madrid, was named Time's Person of the Year for 2019
Teen Swedish climate activist Greta Thunberg, seen here giving a speech at the COP 25 talks in Madrid, was named Time's Person of the Year for 2019 AFP / CRISTINA QUICLER