I assume some kids hopped the fence at a McDonald’s in the suburbs, used a big zipped-up sleeping bag to scoop balls out of the ball pit, loaded them into the back of a pickup with a camper shell, cruised around the region with a mobile ball pit of their own for a few weeks, occasionally chucking a ball or two at passing cars or cyclists, then dumped the evidence in this planter when they started to get mildewy. Right?
Right.
Takes a lot of balls.