Jimmy Fallon needed a moment to process an anecdote from Donald Trump about a private discussion he had with Russian President Vladimir Putin.

During his live-streamed conversation with Elon Musk on Monday, Trump said Putin respected his authority as president, claiming, “I said to Vladimir Putin, I said, ‘don’t do it, you can’t do it Vladimir, you do it, it’s gonna be a bad day. You cannot do it.’ And I told him things that what I do, and he said ‘no way,’ and I said, ‘way.’”

After hearing the audio, “The Tonight Show” audience roared and Fallon took a beat, opening and closing his mouth wordlessly a few times.

“Apparently Trump and Putin talk to each other like Wayne and Garth,” he said, referencing “Wayne’s World.”

Earlier in his monologue, Fallon quipped that Vice President Kamala Harris was seeing continued momentum in the race “thanks to her new campaign strategy: letting Trump talk.”

Watch below.