Justin Timberlake attempted a hole-in-one with Callaway Golf clubs to raise funds for the Shriners Hospitals for Children -- and ET knows whether or not he made the $1 million shot!

Justin had three attempts to drop a hole-in-one on a 180-yard, par three hole at the Callaway Golf Center in Las Vegas, using the company's new Diablo Forged Irons. He didn't make the big shot, but his efforts generated a Callaway Golf donation of $5,000. Timberlake has been a Callaway Golf staff professional since 2008, and he has previously made a hole-in-one.

"It was 182 yards into the wind," he tells ET's Kevin Frazier, who is with him in Las Vegas. "I feel bad that everybody's misinterpreting it. I got so excited by it, and then everybody else was like, 'Really?!' So I said, 'It was a fluke.'"

Timberlake also tells Kevin about one of the boys he met as part of his work on behalf of the Shriners Hospitals for Children.

"A year ago, I met this little boy who was missing thumbs when he was born," Timberlake recalls. "They were able to surgically take two of his toes … and make thumbs. They surgically removed them and implanted them. They grew and it's working. It's just amazing the type of things that they can do."

Despite winning an Emmy this year for his work on "Saturday Night Live," Timberlake says he has turned into a range rat as a result of his deal with Callaway.

"I was joking with them the other day," he says. "I told them they messed up giving me this deal 'cause I call them every other day, 'Hey, I heard there's a new wedge. You gotta send it!' So I've kind of become a range rat. And the range of my club is really close to my house so I can practice, practice, practice!"