There's a song I love listening to by Jeffrey Martin called "Poor Man". I grew up poor in the UK and this is a concept I have never heard mentioned before over here, I was wondering if anyone could help shed some light on it as I'm thinking it might be distinct to rural America? Also, Googling it only seemed to return tips for eye makeup which i'm presuming isn't typical for a bloke in rural America.
The lyric in question is "Maggy, keep an eye on the waterline, the car won't start and the money never comes in on time"
Here's the song: https://youtu.be/2uwpaxTkDrY