It seems this is a variant of "The Panic Is On"

https://mudcat.org/@displaysong.cfm?SongID=4590

and the last part of that line would be "in their flats" - which I guess means "in their apartments"?

And here's a version that has "curvin' in they flat"
https://20thcenturyhistorysongbook.com/song-book/the-great-depression/the-great-economic-disaster/

Which is similar to what's in "I'm Ready to Reform". But what does
"curving" mean here?