Here's a very important photo of (baby) Gronk lounging in a ball pit

Rob Gronkowski's incredible athletic ability probably leads many to wonder what he was like as a child. Aside from packing the house with high-flying dunks in his younger days, Gronkowski was a fairly normal kid who enjoyed doing normal-kid things.

This heart-melting photo of 3-year-old Gronk hanging out in a ball pit proves that.

Is this the day the "Gronk Spike" was born? It very well could be ... or maybe not. But one thing's for sure: Gronkowski looks like he was just as fun-loving as he is now.