Gum chewing is a pastime that Calvin enjoys. He enjoys reading Chewing Magazine, and elevates gum chewing to nearly the status of being a sport. One time when he was chewing gum, he popped it so that it got all over his face and said, "Good heavens! I think I blew my face inside out!"
He also once stated that he couldn't tell his gum from his silly putty when they were both mixed together in his pocket.
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