Mom is gardening when Calvin comes over and tells her he and Hobbes went time traveling to the Jurassic period today. She asks what it was like. Calvin tells her it was scary, and they almost got eaten by a dinosaur. Calvin admits they were trying to go to the future, but made a mistake. Mom is glad he made it back. Hobbes is surprised that didn't faze Mom at all. Calvin reminds him that she didn't take the frogs in the toilet.