Prince Harry has a fellow Brit-turned-Californian to show him around town: James Corden! 

After the longtime friends were photographed together on Feb. 5 riding around Hollywood on an open-air double decker tour bus, the segment featuring the Duke of Sussex aired on The Late Late Show with James Corden Thursday night.

The hilarious, but at times serious, sojourn around Los Angeles revealed a much more relaxed Harry.

On his very first time on the top of an open-aired bus — "we were never allowed" — the Prince opened up to his real-life friend and even dropped a naughty word.

https://www.youtube.com/embed/7oxlCKMlpZw

"They taped a COVID-appropriate segment of Carpool Karaoke on the double decker," a source previously told PEOPLE. "They have been friends for years and had a great time. A lot of joking around and laughter." 

"They toured Hollywood and James showed Harry some special landmarks. They also chatted about Harry's life in the U.S. and his focus now," another insider added.

In addition to a camera crew, the pair had a police escort and Harry's personal security team was also present, the source noted. Not present for the day of fun was Meghan Markle, who stayed behind at their home in Montecito.

The Late Late Show host, 42, was one of the guests in attendance at Harry and Meghan's royal wedding in 2018. 

"It was so lovely. I've known Prince Harry about seven years now and it was wonderful," he shared on an episode of his late-night talk show at the time. "It was one of the most beautiful ceremonies I've ever been to. It was gorgeous, it was a whole affair, it was happy, it was joyous, it was uplifting."

Corden, who was battling allergies at the time, went on to joke about how he was partially preoccupied on not letting a sneeze ruin the moment. 

"The worst part of the ceremony for me was there was flowers everywhere, the most beautiful flowers you've ever seen. And I get quite bad allergies if I'm in such close proximity to flowers, so for a lot of the ceremony, I just needed to sneeze," he explained. "Right at the point when the archbishop was saying, 'If anyone knows of any reason…' and I was like, 'Please don't sneeze. Please don't sneeze.' "

"I had to do one of those internal sneezes," he recalled. "I think I got away with it."

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Prince Harry, 36, and Meghan, 39, announced on Valentine's Day that they are expecting their second child, a little sibling for Archie, who will turn 2 in May.

Buckingham Palace also confirmed in a statement on Friday that the couple — who left full-time royal work in March 2020 — will officially not be returning to their royal roles.

The palace statement added that Harry's grandmother Queen Elizabeth, 94, decreed that in stepping away from royal work "it is not possible to continue with the responsibilities and duties that come with a life of public service." 

Meghan and Harry countered with a statement of their own, saying, "We can all live a life of service. Service is universal." 

Watch The Late Late Show with James Corden weeknights at 12:35 AM ET/11:35 PM CT on CBS.

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