The Tonight Show host was back in New York City on Monday with his family after he injured his right hand over the weekend.
ET got a closer look at the damage as he stepped off of a helicopter, managing to carry two hot beverages.
The incident, which occurred on Saturday while he accepting the Harvard Lampoon's Elmer Award for Excellence in Humor at Harvard University in Cambridge, Massachusetts, was all captured on video, During the fall, Fallon cut his right hand on broken glass and was subsequently rushed to the Massachusetts General Hospital.
The man who took the video, Ryan Schuster, told ET that it was a "very crowded party," leading to Fallon's injury.
"Jimmy fell over a girl who walked behind him," he said. "Jimmy had just grabbed the bottle of Jagermeister and turned around. He didn't see her and then lost his balance. Jimmy seemed OK to me."
Ryan Schuster was at the event with local UFC fighter John "Doomsday" Howard and his manager, Jon Sneider.
The fall follows a similar incident in June, where Fallon nearly tore off his finger when he accidentally caught his wedding band on a desk countertop in his Manhattan apartment. The injury required six hours of surgery to save his finger from being amputated.