Mike Tindall revealed his hilarious nickname for Prince William during a rare podcast appearance with Zara.
The Tindalls, who tied the knot in 2011, appeared on the podcast with rugby league legend Rob Burrow.
Asked by Burrow if he has any nicknames for any of the royals, Mike said: "For the Prince of Wales, he is known as One Pint Willy.
"He is known to me as One Pint Willy because he is not the best of drinkers, coming from a sport where it is built on the social aspect and a couple of beers being sunk quite often. That is one I will give away for the Prince of Wales."
Mike Tindall reveals hilarious nickname for Prince William during rare podcast appearance with Zara
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Zara could be heard laughing before saying: "Oh my god. You are in so much trouble."
Burrow also asked the couple if they had any nicknames for each other.
Mike added: "We basically call each other munchkins a lot.
"I don’t know why that started but it has stuck. I will let Zara decide whether she wants to give away what I am down in her phone as."
Zara Tindall and Mike Tindall are very down to earth royalsPAZara replied: "He is in my phone as something else and it ends with kitten."
Mike also opened up about his third child, Lucas, and what he wanted to name him.
"The two-year-old is where I am pinning my dreams," he said.
"I actually wanted his middle name to be Mulligan because if he did become a professional golfer, he would drop the Lucas and just become Mulligan Tindall.
Mike Tindall and Zara Tindall at their wedding in 2011PALATEST ROYAL NEWS:
Mike Tindall and Zara Tindall at King Charles's CoronationPA"I thought that would be the best golfing name ever. Plus Mulligan means the offspring of a balding man, so that was perfect!"
Burrow told the Tindalls that he always wanted to deliver the Alternative Christmas Message, which airs on Channel 4 at the same time as the King’s Christmas Message on the BBC.
Zara responded: "I definitely think you could do the other Christmas speech. You would definitely rock it and be a huge inspiration to many people.
"I’m sure (King Charles) would let you just do your own thing. I hope to see that one time. I think you just record it anyway and send that out there!"