You fling the ball to the ground because it's fun to bounce red rubber balls. When the ball makes contact with the ground, it explodes. The explosion hurls you several feet back, smashing your body into your neighbor's chainlink fence you hate so much. You bounce off the fence and land face first on the ground.
Your bones ache. You think your nose may be broken. Blood clouds your vision.
At least you've stopped screaming. And so has the boy.