“This is your Royal Highness speaking.”

Dutch King Willem-Alexander has been moonlighting as a pilot for the past 21 years.
Crown Prince Willem-Alexander at the Canberra airport, in 2006.
| Credit: Julian Parker/Getty Images

Bruce Willis has nothing on Dutch King Willem-Alexander, who just revealed he's been moonlighting as a professional pilot for the past 21 years.

The king's dubbelleven, or “double life,” as De Telegraaf called it, involves being a co-pilot on KLM Royal Dutch Airlines.

For more than two decades, the king has flown Fokker 70 planes twice a month, taking unsuspecting passengers on short-haul flights. He calls it a relaxing hobby.

If you think you'd recognize if your pilot was someone famous, or even your country's leader, think again.

“The advantage is that I can always say I am speaking on behalf of the captain and crew to welcome them on board, so I don't have to say my name,” Willem-Alexander told De Telegraaf, according to Sky News. “But then, most people don't listen anyway.”

KLM, for its part, tweeted a photo of the king in the cockpit.