Tech billionaire Elon Musk's dad has had a second child with his own stepdaughter who is less than half his age.
Errol Musk, 76, raised stepdaughter Jana Bezuidenhout, 35, since she was four after marrying her mum Heide.
It's said tech mogul Elon was fuming about the news, having grown up with Jana in the household.
This is the second child the two have had after it emerged in 2018 they had baby Elliot Rush, nicknamed Rushi and now five, reports The Sun.
Errol told the paper his second child with Jana was "unplanned".
"She wasn't planned," he said.
"But I mean, we were living together. She [Jana] stayed here for about 18 months after Rushi was born.
"But I realised she's two generations behind whereas her mother was one generation behind when I married her.
"So any man who marries a woman, even if you feel very sprightly, it's going to be nice for a while. But there’s a big gap… And that gap is going to show itself.
"I married her mother when she was 25 and I was 45. She was probably one of the best looking woman I've ever seen in my life."
He added: "But the thing is it's not practical. She's 35 next birthday. So she's getting on. So eventually if I'm still around she might wind up back with me. It's difficult.
"I mean, I would much rather have them here. But Jana came and spent a few days here about six months ago. And the kids were starting to get on my nerves.
"Then I miss them as soon as they have gone."
As for having more children, Errol said: "The only thing we are on Earth for is to reproduce. If I could have another child I would. I can’t see any reason not to.
"If I had thought about it then Elon or Kimbal wouldn’t exist."
The relationship between Elon and Errol is fraught despite claims to the contrary from Errol.
In a tearful 2017 interview with Rolling Stone, the Tesla and SpaceX boss described his father Errol as "such a terrible human being, you have no idea."
He went on: "My dad will have a carefully thought-out plan of evil.
"He will plan evil. Almost every crime you can possibly think of, he has done.
"Almost every evil thing you could possibly think of, he has done. It’s so terrible, you can’t believe it."
This month Elon Musk has confirmed he welcomed twins recently and made it clear he isn't ruling out having more in the future.
The now dad of 10 welcomed newborn twins to the world last year with his Neuralink executive Shivon Zilis.
News broke of their arrival earlier in the week and their birth is said to have been just weeks before the billionaire had his second child with singer Grimes.
And now he has hinted he might continue to expand his ever-growing brood in the future.
Elon's relationship with his own family took centre stage last month when daughter Vivian Jenna Wilson. came out as transgender and changed her name because she "no longer lives with or wishes to be related to my biological father in any way, shape or form."
