While Kyrgios saw the bright side of Tomic's sneaky service victor, Australian Olympic hockey player Georgie Parker, who was watching in the stands, was less than impressed and took to Twitter to express her dismay.
The Australian Open gets underway on Monday.
With Tomic sitting on two match points, the 26-year-old chose to try a trick serve, playing a between-the-legs shot over the net and into Kyrgios" service court before bouncing a second ball, seemingly in preparation for a "real' serve.
Tomic dominated proceedings to claim the straight-sets victory with scores of 6-3, 6-4, but it was not the manner of his victory that left the fans talking afterwards - it was the way he sealed his win on match point.
Kyrgios said he was happy to see Tomic back in form after missing the 2018 Open with his ranking plummeting to as low as 243 through the year.More news: Hudson-Odoi 'has no plans' to sign new Chelsea deal
"He won a title previous year and it looks like he is carrying a bit of momentum, which is good to see".
"I just count money, that's all I do".
Nick Kyrgios has copped a nightmare Australian Open draw, punished for being unseeded at a grand slam event for the first time in more than three years.
It could have been worse for Kyrgios, a former Open quarter-finalist who has slipped to 50th in the rankings, and Tomic, three-times a second-week challenger at the season's first major.More news: Disappointed about Alien Blackout? An Alien MMO is in the works
With his silky hands in superb touch, Tomic broke for a 3-1 lead and then steamed throught the first set.
World No.51 Kyrgios had a break point early in the second but was unable to consolidate with Tomic then breaking at 3-3.
"He was serving well but I think I returned well", Tomic said.
De Minaur seemingly has a much smoother path to the second round than most of his compatriots, the 27th seed starting against Portugal's world No.103 Pedro Sousa.More news: Apple cuts current-quarter production plan for new iPhones by 10%: Nikkei