Kay McConaughey, Matthew’s mom, says her husband Jim McConaughey died having sex, and she’s written a book about it. “I Amaze Myself! (iamazemyself.com)” is Kay McConaughey details about Matthew McConaughey’s dad dieing during sex. In fact, the book by Kay, 77, is about what went on in their bedroom.

“I knew that something was wrong, because I didn’t hear anything from him. Just nothing,” she says. “But it was just the best way to go!”

OH MY!

She reveals that despite all that … fun .. in the bedroom, she couldn’t have a child, and tried for 16 years. 16 years of practicing? Finally, “That’s when Matthew was conceived. We had tried for 16 years and no baby. So Matthew was a big surprise!”