When in doubt about how to handle a rain delay, follow the lead of a kid to make the best of it.

That's what several NASCAR Sprint Cup Series drivers did Sunday at Pocono Raceway, where rain forced postponement of the Pennsylvania 400 until 11 a.m. ET Monday.

Instead of pouting about it, young Keelan Harvick -- the son of driver Kevin Harvick and his wife DeLana -- starting romping about in various puddles around the drivers' motorhome lot at the track.

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Before they knew it, Keelan was putting smiles on the faces of not only his parents, but also drivers such as Tony Stewart and Brad Keselowski, all of whom joined in the good, clean fun.

Race is tomorrow at 11 so just relax in your nearest puddle... pic.twitter.com/S9Wwl4jwkq

— Kevin Harvick (@KevinHarvick) July 31, 2016

#PuddleUpdate Pt. 2: It's now the Keelan and @keselowski show! #NASCARonNBCSN https://t.co/5tbmC6oeT7

— NASCAR (@NASCAR) July 31, 2016