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Sighhhhh WHAP sighhhhhh.... Calvin is sleepy and sighs at his school desk. Suddenly, the desk grows into a dinosaur. Calvin hops onto the dinosaur as it runs out of the school. Miss Wormwood smacks Calvin's desk with a stick, and he wakes up. Gradually, his eyes close again and he sighs. This time, he's flying on the back of a pterodactyl.