Molly: Talking about good girls and bad girls, reminds me of a commercial for an expensive perfume.
(Explaining it is not as good as the 2 pictures.)
The first picture showed a woman dressed up in plain clothes with a mousey look and bad hair. The caption read:"If good girls go to Heaven, where do bad girls go."
The caption on the next picture said 'EVERYWHERE'"
The picture showed a high fashion model in a designer dress wearing lots of diamonds getting on a private jet.

The original phrase was coined by actress Mae West in the 1920"s. It was also discussed in a book by Helen Gurley Brown in 1964: "Sex and the Single Girl." It was a best seller and very provocative. (A good book to read on a long plane flight.)