He mocked Republican Sen. Mitch McConnell of Kentucky for saying he was "bent out of shape."

Jon Stewart. The Late Show with Stephen Colbert/CBS

During a visit to "The Late Show with Stephen Colbert" on June 18, Stewart balked at McConnell's suggestion that he was "bent out of shape" and delivered a scathing monologue at the expense of the senator, Business Insider's David Choi reported.

"No, Mitch McConnell, I am not bent out of shape," Stewart said, adding that he was "fine" but had been "bent out of shape" for the 9/11 victims.

Stewart went on a tirade against McConnell and other lawmakers, much like his signature comedic monologues from his 15 years of hosting "The Daily Show."

"I feel like an ass----. Now I feel stupid. This is a huge misunderstanding," Stewart said. "I didn't know that they were busy. Now I don't even know what to say. I didn't mean to interrupt them with their jobs!"