The Tyrannosaurus report was a school assignment in which Calvin tried to write an essay on whether the Tyrannosaurus rex was a hunter or a scavenger. To try to help himself do better, Calvin invented the Cerebral Enhance-O-Tron and used it to enlarge his brain. Unfortunately, his head ended up shrinking back to normal too quickly, and he failed to finish the report. In the end, however, he didn't fail the assignment; Miss Wormwood thought that he had simply chosen too difficult a topic, but she was impressed by his attempt and gave him a barely passing grade.
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