Cardboard Tunnel Run

I spotted an open delivery box tipped sideways right by the hallway! *Gasp!* A giant cavern, ready for action! I charged forward with heavy, rhythmic stomps—thud, thud, thud! Diving straight into the cardboard chute, my plush back scraped against the flaps and popped right through the other side into a warm square of morning sun. Bwahaha! The flaps rattled like applause, so I spun around, raised both paws, and took a grand bow!