- Tindall, husband of William's cousin Zara, made the comment on a podcast
- Zara responded by saying, “You're in so much trouble!”
Mike Tindall has revealed he calls Prince William 'One Pint Willy' because 'he's not the best drinker'.
The ex-England rugby star also admits that he and his wife Zara call each other 'munchkin', while she has her husband saved in her phone as a nickname ending in 'kitten'.
The Tindalls made the revelations in a special podcast with rugby legend Rob Burrow, who is battling motor neurone disease.
When asked by Burrow if he has any nicknames for any of the royals, Mike says: 'To the Prince of Wales he is known as One Pint Willy.
Prince William is known to Mike Tindall as 'one pint Willy' because he is not a big drinker
But he had the good sense to enjoy a glass of Guinness on St Patrick's Day this year
Mike and Prince William appear to be about to arm-wrestle at Ascot, 2019
William, Prince of Wales and Catherine, Princess of Wales burst into laughter as they joined Mike and his mother as they attended the recording of a special episode of The Good, The Bad and The Rugby podcast in the Green Drawing Room at Windsor Castle. in-laws, Princess Anne
The Tindalls made the revelations in a special podcast with rugby league legend Rob Burrow, who is battling motor neurone disease, seen here with his family on BBC Sports Personality of the Year in 2022
'He is known to me as One Pint Willy because he is not the best drinker, coming from a sport that revolves around the social aspect and where a few beers are often drunk. That's one I'll give away to the Prince of Wales.'
Zara can be heard laughing before she says, “Oh my god. You're in so much trouble.'
Burrow also asked the couple if they had pet names for each other.
Mike says, “We actually call each other Munchkins a lot. I don't know why that started, but it stuck.
“I'll let Zara decide if she wants to give away what I have in her phone because…”
Zara replies, “It's in my phone as something else and it ends with kitten.”
Mike also admits that he dreams of his two-year-old son Lucas becoming a professional golfer – and that he wanted to give him the middle name 'Mulligan'.
“The two-year-old is where I pin my dreams,” says the 2003 Rugby World Cup winner.
'I actually wanted his middle name to be Mulligan because if he became a professional golfer he would drop the Lucas and just become Mulligan Tindall.
Zara Phillips and Mike Tindall smile as they look at her phone during Day Two of Wimbledon last year
Zara and Mike, pictured at Ascot last year, save pet names on their phones
Zara Tindall accompanies son Lucas on a trampoline at Gatcombe Park this year
“I thought that would be the best golf name ever. Plus, Mulligan means the offspring of a balding man, so that was perfect!'
Burrow tells the Tindalls that he has always wanted to deliver the alternative Christmas message, which is broadcast on Channel 4 at the same time as the King's Christmas Message on the BBC.
Zara says, “I definitely think you could do that other Christmas speech.” You would definitely rock it and be a huge inspiration to many people.
“I'm sure (King Charles) would just let you do your own thing. I hope to see that someday. I think you'll just record it and send it over there!'
- Seven: Rob Burrow, The Total Sport Podcast is available on BBC Sounds