The most under-appreciated sequel in movie history is actually amazing.
There are motorbikes instead of cars.
Cool riders are so much better than greased lightnings.
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The Pink Ladies Pledge.
"The Pink Ladies Pledge: to act cool, to look cool and to be cool. 'Til death do us part - think pink!"
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Choreographed basketball dancing.
Decades before Zac Efron ever tried it in High School Musical.
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Feminist progress.
In Grease 2, the boy changes in order to get the girl, rather than the girl changing her identity to please the boy.
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