Princess Diana made the 'Back to the Future' premiere a 'nightmare' for Michael J. Fox

Michael J. Fox wasn’t the only celebrity at the 1985 world premiere of the hit blockbuster film “Back to the Future.” Princess Diana was also at the event and even sat right next to the actor. On Wednesday’s “The Tonight Show Starring Jimmy Fallon,” Fox revealed how she inadvertently turned his big night into a big nightmare.

“The movie started and also I had to go pee,” recalled Fox. “So for the rest of the movie, I'm sitting there, like, dying. I can't say anything to her and I can't walk away from her because I can't turn my back on her. So it was just agony it could have been the greatest night of my life but it was just a nightmare. A pee-holding nightmare.”

Video Transcript

MICHAEL J. FOX: The world premier in London. And I was-- she's sitting next to me and the lights go down. And the movie starts, and I realize I'm one yawn and fake yawn and arm stretch away from being on a date with her--

JIMMY FALLON: Oh, come on.

MICHAEL J. FOX: --which is hilarious.

JIMMY FALLON: You were not, come on.

KYLIE MAR: Michael J. Fox wasn't the only celebrity at the 1985 world premiere of his hit blockbuster film "Back to the Future." Princess Diana was also at the event and even sat right next to the actor. And on Wednesday's "Tonight Show," Michael revealed how she inadvertently turned his big night into a big nightmare.

MICHAEL J. FOX: The movie started, and also I had to go to pee. And so for the rest of the movie, I'm sitting there, like, dying. I can't say anything to her. And I can't back-- I can't walk away from her because I can't turn my back on her. So it was just agony. And it could have been the greatest night of my life, but it was-- it was just a nightmare.

KYLIE MAR: Despite the pee premiere issues, the film was a huge success. And Princess Diana must have enjoyed it because she attended the premiere "Back to the Future III" many years later.

MICHAEL J. FOX: She was great.

JIMMY FALLON: Wow.

MICHAEL J. FOX: She was sweet. She seemed to laugh a couple of times. And she's was booing it.