Matthew McConaughey's mum refused to cover dad's huge manhood when he died during sex

You never forget the day a parent dies, but for Matthew McConaughey, it was memorable for an altogether different reason.

Turns out the Dallas Buyers Club star's mum refused to cover his father's huge manhood when he died during sex.

The 53-year-old opened up about his parents' relationship in his memoir Greenlights, describing them as 'like the Pacific Ocean in a storm'.

Kay and James McConaughey had quite a tumultuous time, having divorced twice and married three times.

But despite their ups and downs, Matthew said the bad times were 'superseded by the love and humanity' they had for each other.

And the passion between them was never an issue, as the actor revealed that his dad predicted he would end up dying while 'making love' to his wife - a prophecy that ended up coming true.

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Describing the moment in his book, Matthew wrote: "I got a call from my mum: 'Your dad died.' My knees buckled.

"I couldn’t believe it. He was my dad. Nobody or nothing could kill him. Except mum.

"He’d always told me and my brothers, 'Boys, when I go, I’m gonna be makin' love to your mother.' And that’s what happened. He had a heart attack when he climaxed."

Although this is pretty explicit in itself, it turns out there's more to the story that Matthew decided to leave out of the book.

Instead, he spilled on the beans on an episode of the WTF with Marc Maron podcast, stating: "There’s other parts of the story that aren’t even in the book.

"I found out later that when the ambulance came to get him at the house, obviously all the neighbours came out on the street.

"And they came and told me later that my mum, in her negligee nightie that she had woke up in, wouldn’t let the paramedics cover him.

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"She kept ripping the sheet off going: 'Uh-uh, I want the world to see why his nickname was Big Jim, don’t you cover him!'"

Well, I guess that's one way to honour his memory - the neighbours won't be forgetting that nickname anytime soon.

Kay herself also opened up about her late husband in a 2020 episode of the Red Table Talk in which she said: "You know how he died, don't you?

"My husband died making love to me, and I remember saying when he fell back, I said, 'What's the matter, big boy? I wear you out?'

"And he's [giving] no response, no response and I'm thinking, 'Oh my god, something's wrong.'"

She continued: "I had no idea that it was too much. His heart just stopped, you know? We had a party for him, kind of a celebration of his life."