"H-hey!" Okay, so maybe it wasn't as safe of a hiding place as he'd thought. At least he'd gotten the snowball-making done in the few undisturbed seconds he'd had.

Billy poked his head out for a moment, saw a flash of something that might have been the culprit, and retaliated with a snowball or three. You'll get yours soon, Marco, even if it's not from Billy or right now.