“I’ve never quite seen anything like that debate,” Veep Joe Biden told Jimmy Fallon as he paid his first visit to Tonight Show.

Biden did not seem so wowed by the record 81M people who’d viewed Monday’s debate between Donald Trump and Hillary Clinton, noting that, years ago, his VP debate with Sarah Palin clocked 71M.

Fallon, who’d taken heat recently for playing host to Donald Trump and mussing his hair but not asking tough questions, commented on “all the fact checking” going on around Monday’s debate. “It seemed like fact checking was a big thing,” he marveled.

“I’ve never seen anybody who knew as few facts,” countered Biden, of Trump. Biden’s out campaigning for Clinton these days, as is First Lady Michelle Obama.

“What surprised me, and I’d like to be serious for a second – which may be dangerous here,” Biden joked to Fallon’s studio audience. “What amazes me about Donald Trump, and he’s probably a decent guy, but his lack of sensibilities, the way he talks about, ‘I was waiting for the housing market to fail because that’s business.’ That’s not business that’s callous.”

“Or, ‘I paid no taxes and that makes me smart.’ What does that make the rest of us, suckers?”

Biden challenged the crowd to name “any president you studied, read about, or knew, who would say anything like that. Name me one. It angers me quite frankly.”

“American people don’t like being played for suckers,” Biden said. “My dad had an expression for real: It’s a small price to pay to live in this country. Just pay your fair share, for god sake.”

Biden’s remarks about Trump were very toned down compared to last month when, making his debut appearance on Clinton’s campaign trail, he said Trump “would have loved Stalin.”

On Fallon’s show, Biden confessed he’s surprised Trump “is still in the game…I’ve never known a candidate who knows as little about the world as this man does.”

“I don’t even think he understands how much damage he does by what he’s already said,” Biden said. “Europe, especially central Eastern Europe, is scared to death by what Putin may or may not do.”

“Hillary – you’d expect me to stay this – is one of the brightest people I’ve ever known and has an incredible amount of experience.”

“Nobody’s perfect,” he said, continuing on the Hillary front, joking, “I learned how to become an ideal candidate: announce you’re not running for president.”