Chevy Chase channelled - inadvertently - his Clarke Griswold character from the National Lampoon series at a questions and answers session in New York.
In a video released by online entertainment publication, TMZ, Chevy Chase is seen walking across the stage after getting out of his wheelchair, suddenly dipping out of sight, as he stepped right off the stage.
Chase was due to answer questions during a Q&A event about his 1989 holiday classic, National Lampoon's Christmas Vacation.
The 80-year-old star was unharmed by the fall and was able to partake in the event.
A spokesperson said: "His health is amazing and his tour, A Live Conversation With Chevy Chase, has been selling out across the country,"
"He sometimes uses the chair due to all the airport travel – even at 80 years young. He does not need rest. His tour is extensive during the holiday season."
Chase suffered a near-fatal heart condition in 2021.
