Apparently, what the woman sang in the grocery store was about a boy, originally.

Daryl Hall & John Oates - "Rich Girl" - YouTube

https://m.youtube.com/watch?v=MJsloJmMbis&feature=youtu.be

Hall & Oates – "Rich Girl Lyrics" | Genius Lyrics

https://genius.com/Hall-and-oates-rich-girl-lyrics