'Red Table Talk' exclusive: Matthew McConaughey's mom recalls how husband died during sex

Matthew McConaughey's mother is getting candid about the death of her husband and the actor's father, James Donald McConaughey.

In a clip from Tuesday's episode of "Red Table Talk," shared exclusively with USA TODAY, McConaughey's mom, Mary Kathlene McCabe, joins the actor to describe the intimate circumstances of her husband's death.

"My husband died making love to me," she says. "And I remember saying, when he fell back, I said, 'What's the matter big boy? I wear you out?' No response, no response, and I'm thinking, 'Oh my God, something's wrong.'"

McCabe says she then ran across the street to get help from a neighbor.

"And I said, 'Something's wrong. Something's wrong. I don't know what it is.'" she continues. "I had no idea that it was too much."

The upcoming "Red Table Talk" episode premieres on Facebook Watch at noon EDT.

In his memoir "Greenlights," McConaughey revealed that his father died while having sex with his mother.

"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," the actor wrote. "He'd had a heart attack when he climaxed. Yes, he'd called his shot all right."

'It's quite freeing': Matthew McConaughey lays soul bare in unconventional 'Greenlights'

McConaughey shares other striking moments between his parents throughout the book, including how the twice-divorced, thrice-married couple had a fight that turned bloody but ended with them making love, and how his mom went on extended vacations that turned out to be divorce.

He also shares how his dad's death in his early 20s forced him to grow up, writing that the father who seemed above the law was no longer there to look out for him.

"I did a huge amount of laughing with myself when writing," McConaughey told USA TODAY ahead of the book's October release. "I did a huge amount of crying – most of my tears came from being able to go back and feel the love that my family had that my mom and dad had for each other, that they had for us."

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This article originally appeared on USA TODAY: 'RTT' exclusive: Matthew McConaughey's mom describes his dad dying during sex