In Grease, Sandy sings she needs a man, Rizzo needs a man, Frenchie needs a man, even Jan needs a man. Every woman needs a man. Basically, Grease suggests a woman needs a man to be whole, to be complete. A woman can't be her own person: she needs a man to live a proper life. It's like Barbie and Ken - no Barbie is complete without her Ken. Similarly, though, Ken isn't complete without a Barbie, either. In Grease, it's all about the guys' chase to get a woman of their own. Supposedly, they're at school, but not even a handful of scenes shows them in the classroom. By ignoring the entire rest of the characters' lives, Grease makes it seems as if their lives only exist out of the hunt for the other sex and hanging out with friends, and, consequently, suggests getting a partner (and being with your friends) is more important than anything else. Here's how Grease emphasizes on that stereotype of men and women belonging together, in the song We Go Together: We go together,Like rama lama lama ka dinga da dinga dong[...]That's the way it should be, wha ooohhh Men and women together, as it should be. Note that Grease also never even hints at homosexuality (or bisexuality for that matter), and that while they're all pretty bromance and sister-love with each other. Nah-ah. Men and women together, that's the way it should be. That's another gender-based, sexist stereotype right there. Watch these two videos (unfortunately I couldn't find a video of the scene in its entirety): http://youtu.be/wsQJVAzezrc http://youtu.be/FWrh6KWGFo0 Again, it's clear Danny's goal is just to get Sandy laid. He even goes as far as to offer her a ring to get it (he certainly doesn't go about anything subtly, does he?). Sandy's stupid enough to take his proposal to be sincere - first being seduced and then accepting a ring and telling him she knows he'll respect her. Women truly are just playthings in this movie, but as long as they're together, forever, with a ring on it, it's all good.