Rosie O'Donnell is never one to hold back. In an Aug. 19 Instagram post, she called out fellow TV icon Jay Leno for a mean-spirited 2009 segment from "The Tonight Show with Jay Leno," which was revisited in the new Netflix docuseries " Fit for TV: The Reality of the Biggest Loser ."

The former View cohost and Rosie O'Donnell Show star shared an incendiary message to Leno Tuesday on social media, as she made her way through Netflix 's buzzy Biggest Loser docuseries that chronicles various controversies surrounding the weight-loss-themed reality competition show.

Rosie O’Donnell is taking aim at Jay Leno after one of his cruel late night stunts resurfaced in the new “The Biggest Loser” documentary. The Netflix series, “Fit for TV: The Reality of the Biggest Loser,” shows a clip of Leno reading aloud death threats aimed at former contestant Tracey Yukich while she sits alongside him.