<b>The first rule is &quot;the rules can change at any time&quot; as Shaun and the sheep take on the pigs in a comically chaotic game of ball—and then some.</b><br><br>It’s a hot day, and Shaun is in the meadow, tossing a tennis ball up and down, looking for mischief.<i>Boink! </i>An annoyed Bitzer swings at the ball with his dog bone, sending it sailing across the meadow. Soon the flock has joined in a frenetic game of Bitzerball, with flowerpot bases, sprinkler hazards, and a hopelessly complicated, wildly shifting set of rules. And that’s before—<i>squeee!</i>—the pigs get involved. . . .