06/03/2017 10:37 PM AEDT | Updated 07/03/2017 12:14 AM AEDT

David Letterman Says Donald Trump 'Can Lie About Anything'

'I don’t get that.'

SAUL LOEB via Getty Images
David Letterman (pictured in May 2016) called on Democrats to get a backbone and fight back against the new president.

David Letterman may have left late-night television, but he didn’t retire his opinions.

The former host took on President Donald Trump in an interview with Vulture that was posted Sunday.

Comparing Trump to the head of a family named “Larry,” Letterman said: “If Larry behaved the way Donald behaves, for even a six-week period, the family would get together and say, ‘Jesus, somebody better call the doctor.’ Then they’d ask him to step down. But Trump’s the president and he can lie about anything from the time he wakes up to what he has for lunch and he’s still the president. I don’t get that.”

The 69-year-old Letterman also called out Democrats. “We don’t need more confirmation that there’s something wrong with Donald Trump,” he said. “Let’s instead find ways to rebuild what is rational. And the Democrats, goddamn it, get a little backbone, get a little spine.” 

NBC via Getty Images
Letterman interviewing Trump in 1987.

Letterman, who stepped down from CBS’ “Late Show” in May 2015, said in the Vulture story that if he still hosted a program, producers would have to pull him off the stage to stop him from talking about Trump. But even in retirement, he has remained vocal.

In an October interview with the New York Times, he said Trump needed to see a psychiatrist. Months earlier, in a segment for NBC, Letterman called him “repugnant to people.”