Posted: 2/8/16 at 12:22pm
The Sandra Dee reference also goes a bit deeper than that and provides a little foreshadowing,be jock is part of what makes the song so clever. Sandra Dee's public person may have been sunshine and wholesomeness, but her life was not exactly that, foreshadowing that Sandy Dumbrowski has some bite and grit under her layers of goodness. In the original stage version, this is first really expressed when Samdy and Rizzo get into a scrap immediately after the song, but rally points toward the transformation at the end of the show, which is not Sandy selling herself out as the movie and later watered down stagings give us, but rather Sandy and Danny realizing that they both fall somewhere in the middle and they meet there, rather that trying to put on the guise of the good girl and the bad boy - being a good girl doesn't mean that Sandy can't be hot and have a little fun, and being a troublemaker doesn't mean that Danny doesn't have a good heart.
(it's also why changing Sandy's surname to Olsen or Young is an insult to the show and the song. She needs to have a surname beginning with "D" and Dumbrowski is meant to reflect her Polish heritage, defining her as a blue collar girl of not a lot of means when Polish people were often the brunt of jokes (All in the Family, anyone?), and somewhat explaining Sandy's strong desire to be the good girl and overcome...)