“Late Show” host Stephen Colbert returned from his vacation on Monday night and went after President Trump for the “epically weird” speech he gave at CPAC over the weekend.

Colbert began by telling his audience that the “orange man was feeling blue” at “Conservative Political Action Conference,” or as he called it for short, “D-BAG.”

He mocked the president for “dry-humping old glory” as he walked onto the CPAC stage.

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“I believe that is the first time a flag has ever volunteered to be burned,” Colbert quipped.

The “Late Show” host called Trump’s two-hour running time “impressive” because some of President Obama’s “pauses” were “almost an hour.”

Colbert then ripped Trump’s profanity-laced portion of the speech, sarcastically calling it “very presidential."

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The CBS star also ridiculed the president for his “spontaneous product endorsement” of TiVo, which he noted “has been around for 20 years.”