Jimmy Kimmel's newborn son's operation on his heart was "the longest three hours" of his life.
The 48-year-old American television presenter announced his wife, Molly McNearney, gave birth to their child William on April 21, but the tiny tot had to undergo an invasive procedure within a matter of hours after he was born because he had "two defects in his heart", which left the parents fearing the worse.
Speaking openly about his brood on Monday's (05.01.17) episode of 'Jimmy Kimmel Live', the show's host - who also has daughters Katie, 25, Jane, two, and 23-year-old son Kevin - said: "On Monday morning, Dr. Vaughn Starnes opened his chest and fixed one of the two defects in his heart. He went in there with a scalpel and did some kind of magic that I couldn't even begin to explain.
"He opened the valve, and the operation was a success. It was the longest three hours of my life."
During the programme Jimmy thanked the Children's Hospital Los Angeles and the medical experts for taking care of his child.
William has since left the hospital to settle in at home with his family, and the funnyman has revealed his child is doing "great" following the operation and is doing "all the things" babies should do, including peeing on his mother.
He continued: "He's doing great. He's eating. He's sleeping. He peed on his mother today while she was changing his diaper. He's doing all the things that he's supposed to do."
Despite the initial complications, Jimmy has admitted he loves fatherhood and has credited it as "the best".
He said: "This is the best."

Don't mess with Drew Barrymore. The 43-year-old actress admitted she once spray-painted her ex boyfriend's car on Thursday's episode of Jimmy Kimmel Live!. Barrymore...

Ted Cruz says he's still fired up about beating Jimmy Kimmel in their 1-on-1 basketball game over the weekend ... especially after all that trash Jimmy talked before, during and after the game! "Jimmy is very good at smack talk," Cruz tells TMZ...

Nick Kroll had a wardrobe malfunction on Wednesday when he split his pants during the middle of an interview on Jimmy Kimmel Live!. Before the fashion mishap, Kroll was telling Jimmy...

Steve Martin, Martin Short and Tom Hanks' parties sound like a plethora of fun...and kind of gross. On Jimmy Kimmel Live! on Tuesday, host Jimmy Kimmel recalled how every other year,...

Sen. Ted Cruz challenged late-night host Jimmy Kimmel to a one-on-one basketball game with proceeds going to charity.

Jimmy Kimmel and Ted Cruz may not agree politically, but they do agree on supporting deserving causes. Over the weekend, the late-night host and United States Senator came together in...

In case you had a bet going, and you almost certainly didn’t, it’s finally been settled: Ted Cruz would beat Jimmy Kimmel in a game of basketball. On Saturday, the late-night host went from figuratively dunking on the former Presidential hopeful (Kimmel did name their charity game The Blobfish Basketball ...

Jimmy Kimmel might have lost a challenge to Ted Cruz but that didn't stop the TV host from throwing one last jab the senator. ICYMI ... Jimmy a couple weeks back poked fun at Ted for essentially jinxing the Houston Rockets during the NBA...