You start with a glob of really wet sand. Then run to the dry sand and begin coating the wet sand with a small dusting of the dry stuff, all the while spinning the mass in your hands. When you are done, the infamous sandball. The ball will typically form in the size of whatever hands made the ball. Imagine that.
Then, you toss it to your buddy, take one step back and toss it back. Repeat action until ball explodes, crumbles, implodes or bounces off your melon.
Okay, these are not the greatest pictures. The light is horrible. But, who cares? It’s sandball.