Lip readers swear that Meghan Markle dropped the F bomb just minutes after exchanging vows with Prince Harry in the Saturday royal wedding.

Former Suits star Markle, 36, had tied the knot with Harry on May 19 at St.George's Chapel at Windsor Castle. Then when she was riding in the royal carriage, the brand new Duchess of Sussex appeared to mutter the "F" word.

Did Markle suddenly become the Duchess of F-ussex?

Strangely, according to onlookers, it seemed the Hollywood star wasn't expecting to see so many people in the Windsor crowd, all set to cheer the procession of the "just married" pair.

One fan tweeted, "TURNED THE ROYAL WEDDING ON JUST IN TIME TO SEE MEGHAN DEFINITELY SAY 'F**K' ABSOLUTE SCENES."

Another wrote via Twitter, "Meghan says 'Oh f**k!' as carriage enters private section of Long Walk. What a farce!"

A third added, ""I swear I just saw Meghan say 'f**k' in the back of the carriage as she went through those gates lol."

One lip reader, however, begged to differ, claiming as the carriage came under the gates, Markle actually said, "So much fun!"

It's clear royal fans were eager to observe the secret things Harry, 33, and Markle might have said to each other off mic.

During the wedding, viewers noticed the Prince quietly tell his beloved, who previously divorced producer Trevor Engelson, "I am so lucky."