I didn't read the article, but I want to believe that they were recreating a Bear scene when they went in.

....Boy running in a crouching shuffle across frozen pond, hands slightly out for balance. British accent. "I've got to be careful, *pant* I can almost hear the ice crack."

Second boy, running beside first boy, hands in a circle to his right eye mimicking movie camera. Surprised accent. "Hey, I can almost hear it cracking too!"

Both boys stop to listen......