"The guy I was with said 'aw, you'll probably sink it now."
And so it proved a clean drive on the Par 3, 115m hole and Johnson's shot landed, bounced twice, and dropped in.
Having played golf since the age of 13, Johnson said getting an ace "absolutely" still gives him a charge.
"I brought everyone drinks back at the club. It didn't matter what it cost me because it was still as exciting as ever."
He is currently in Fiji for the start of a Pro/Am tournament today. American company US Hole In One a leading provider of hole-in-one insurance for golf events calculates the odds of the average player making the feat at 12,500 to 1, with professionals 2500 to 1.