A yo-yo craze hits Springfield Elementary, affecting no one more than Bart. When Mrs. Krabapple takes his yo-yo and places him in detention, Bart gets back at her by answering her personal as a perfect- but fictitious- lover. After standing Mrs. K. up, however, Bart feels remorse and he enlists the family’s help in letting her down easy. Meanwhile, Homer attempts to cure his foul mother by means of a swear jar.
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