David Tennant's eldest son lectured his parents after he found out they were expecting baby number f

Ty Tennant gave his parents a quick lecture!

David Tennant is a happy dad-of-five after he and his wife, Georgia, welcomed their fifth child, daughter Birdie, back in October 2019. However, he previously revealed that his eldest son, 17-year-old Ty, was not impressed by the news. 

READ: David and Georgia Tennant's daughter Olive makes film debut in Jamie Dornan's new drama

The star joked about his son's hilarious reaction on explaining: "We have number five child on the way. It's very exciting. There is a big spread of ages, with a 17 year old at one end. When he found out about the new baby, he was like, 'You're having another one?' It's odd when a 17-year-old is giving his parents a lecture on birth control!"

David Tennant with his baby daughter Birdie

As well as their baby girl, David and Georgia share four children, Ty, 19, Olive, ten, Wilfred eight, and Doris, six. James Corden announced the exciting news in late May 2019 on , saying: "We were just talking backstage, this is blowing my mind. You have four children already, your oldest is 17.

MORE: David Tennant and wife Georgia pose up a storm in series of cute photos

WATCH: David Tennant tearful as he leaves Doctor Who

"You just told me you and your wife, the lovely Georgia, are expecting your fifth child." David replied: "What's really weird about it is we're now getting lectures on birth control from our 17-year-old son. And that's definitely meant to be the other way around. He's like 'Come on, do I need to teach you the basics?' It's mental. It's a lot."

David is currently starring in

David and Georgia – whose dad, Peter Davison, was the fifth actor to portray the famous Time Lord between 1981 and 1984 – met when she starred alongside him in the episode, , in 2008.

READ: David Tennant's wife shares rare post of husband and handsome son Ty

David usually keeps his private life behind closed doors, but once opened up about his marriage to the after the journalist joked that it was as if he'd deliberately picked a partner who was the daughter of a Doctor, he responded: "That's exactly what I did, yes, and there were very few candidates available. It was a limited field."

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