What do you do when you have a giant inflatable tennis ball and a bunch of friends? It's a dilemma we're all familiar with, but have you ever considered a friendly "Giant Tennis Ball Gladiator Match" in the middle of a park? Well, the guys at RackaRacka did, and the chaos that followed was equally hilarious and stupid. But we're not gonna lie, this looks like a lot of fun. So dust off that old giant bouncy tennis ball you have laying around tell your buddies it's time to battle.