Matthew McConaughey's dad had nickname related to his manhood that mum wanted to 'show off' after his death

It's never easy losing a parent, but for Matthew McConaughey, the passing of his father was pretty unusual.

The Dallas Buyers Club star, 54, previously opened up about his mum and dad in his memoir Greenlights, published back in 2020.

He revealed that Mary and James McConaughey got divorced twice and were married three times.

Although, McConaughey said his parents were 'like the Pacific Ocean in a storm' and that the tough times were 'superseded by the love and humanity'.

Meanwhile, the actor went one step further and lifted the lid on their sex life.

The pair clearly liked getting it on and his father James even predicted that the way he would die would be 'making love' to his wife, which is exactly what happened.

Horrifyingly, after he died during sex, McConaughey said his mum refused to cover up James' massive manhood, nicknamed 'Big Jim'.

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

Matthew McConaughey said his dad predicted how he would die (Taylor Hill/FilmMagic)

"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."

McConaughey continued to expand on the story during an episode of the WTF with Marc Maron podcast.

He said: "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.

Matthew McConaughey with his wife Camila Alves and his mother Mary Kathlene McCabe (SUZANNE CORDEIRO/AFP via Getty Images)

"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!'"

Speaking about her late husband, May also said in a 2020 episode of the Red Table Talk: "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."