Ron Howard Explains Just Why Tom Hanks Was Pantsless In Front Of The 'Mona Lisa'

The "Da Vinci Code" director shared a cheeky little anecdote Friday that might've solved a real-life puzzle — the mystery behind the 'Mona Lisa' smile.

Sometimes even A-listers have to film important movie moments by the seat of their pants.

That was apparently the case for Tom Hanks when director Ron Howard and his crew moved production of “The Da Vinci Code” (2006) into the Louvre and Hanks found no time to change between scenes inside the famed Paris museum.

Howard told the tale during a panel Friday at the MegaCon convention in Orlando, Florida.

“Tom Hanks didn’t have time to go back to his dressing room to change for the next scene,” he told the crowd, adding: “And so I was giving him these notes on what the next scene was going to be and he was changing his pants in front of the ‘Mona Lisa.’”

“I said, ‘Wait a minute. This is a moment we have to remember,’” Howard continued. “‘OK, We’ve been under the water with the mermaid [in 1984’s ‘Splash’], we’ve been weightless with the ‘Apollo 13,’ and now you’re pantsless with the ‘Mona Lisa.’”