the original (1950s,early 1960's ?)clear foodwrap that teens used when they were too scared to go buy condoms

I couldn’t care less (but one must keep up appearances, right?)

1. In reference to a manipulative teenage girl in Chicago.
2. Refers to an incident that she had with a boyfriend where they were about to have sex, but didn't have condoms. They searched through her parents' drawers, and when they couldn't find one, she said "well, why don't we use saran wrap?"
3. Now used as an insult towards the aforementioned girl, given that she mistreats all humans she comes in contact with.
4. Alludes to her idiocy.