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What kind of dinosaur did you say this was? It's a stegosaurus! He looks pretty ferocious. No, he was a plant eater. The tail spikes were for self-defense. Oh. Did tyrannosaurs fight these? Of course not, Mom! Turannosaurs came millions of years later! Look, try not to embarrass me when we go inside, OK? Why are we going here if he already knows everything?
Mom asks Calvin what kind of dinosaur they're in front of. Calvin tells her it's a stegosaurus. Mom says it looks ferocious, but Calvin tells her it was a plant eater. He tells her the tail spikes were for self-defense. Mom then asks if tyrannosaurs fought them. Calvin tells her of course not. Tyrannosaurs came millions of years later. Calvin walks to the building telling her not to embarrass him when they go inside. Dad wonders why they're going in if he knows everything already.