Mark Cuban, the billionaire investor who has relentlessly trolled Donald Trump on social media for months, has officially endorsed Hillary Clinton in her bid for president.
He then rounded out his support for the Democratic presidential nominee with a series of jabs at Trump, opening a Pittsburgh rally for Clinton and her running mate Tim Kaine with a greeting for Trump - in Russian.
Trump had used a news conference on Wednesday to say he hoped Russia found the emails deleted by Hillary Clinton from her time as secretary of state, a call that was quickly contradicted by his vice presidential nominee Mike Pence, who condemned any possible cyber-espionage.
At Saturday's rally in his hometown, Cuban didn't stop there, using what he said was a Pittsburgh insult for the entrepreneur-cum-politician
"Leadership is not yelling and screaming and intimidating," Cuban said. "You know what we call a person like that in Pittsburgh? A jagoff!"
For the uninitiated, Wikipedia says a jagoff "is an American English derogatory slang term ... meaning a person who is stupid or inept."
In an interview with CNN after the rally, Cuban said he thought Trump had gone "bat**** crazy," adding, ""I am ready to vote for a true leader, I am ready to vote for the American Dream. I am ready to tell the world that I am here to endorse Hillary Clinton."