“Apparently, the extra oil has been great for getting Trump in and out of the MRI machine,” quipped Fallon in a nod to the president’s claim that he had an “absolutely perfect” MRI last year. (Trump later told The Wall Street Journal that he actually got a CT scan instead of an MRI.)

Moments earlier, Fallon used the U.S. military’s recent middle-of-the-night operation in Venezuela to tease the president, who has escalated his threats to take over Greenland in recent days. A new poll from Quinnipiac University found that 86% of Americans are against the U.S. taking the Arctic island by force.

“Everyone was like, ‘Now, Donald, if you want Greenland, you have to finish your Venezuela first,’” Fallon joked.

“Not surprisingly, 100% of Greenlanders are against it. That’s right, both of them.”

Check out more of Fallon’s Thursday monologue on “The Tonight Show.”