Donald Trump Jr. falsely claimed that former British spy Christopher Steele had backed out of testifying -- and other social media users shamed his bogus statement.

Steele, who authored the salacious dossier detailing President Donald Trump's links to Russia, had been scheduled to deliver a video lecture on disinformation next week at the Reawakening the Spirit of Democracy Conference in Baltimore, but then got "cold feet" and canceled, reported Politico.

The president's son tweeted a link to a report on Steele's cancellation, which was more or less accurately aggregated by the alt-right adjacent ZeroHedge website, and misleadingly claimed the former MI6 officer had been set to testify before some unspecified body.

"Perhaps Steele was 'spooked' by testimony last week from former Trump attorney Michael Cohen," wrote the pseudonymous blogger Tyler Durden for ZeroHedge, "who debunked a key claim in the dossier that he traveled to Prague in August 2016 to meet with Kremlin officials in order to arrange clandestine payments to hackers who stole emails from the Clinton campaign and the DNC."

Other Twitter users called out the president's son for spreading phony claims.