He's one of tennis' Mr Nice Guys, and a 15-second clip posted to Novak Djokovic's Twitter account has proven, yet again, why.
The 31-year-old is in Melbourne ahead of both the Australian Open and a week-long heatwave set to hit most of the country.
But while Djokovic is happy to admit he's feeling the heat, he also seems to have discovered just how joyful running through sprinklers in that heat can be.
The Serbian tennis star filmed himself frolicking - yes, frolicking - through a spray of water after training, captioning the clip: "Thank you, dear sprinklers".
And it is, without a doubt, a bloody delight. It's like watching the first time kids do the same thing.
Djokovic kicks off his Australian Open campaign tomorrow evening at 7pm while Aussie hopefuls Alex de Minaur, Ash Barty, Bernard Tomic and Ellez Perry - among others - will take to the court today.