The phrase "long backs" refers to people who hold grudges or keep negative feelings towards others for a long time.
Sentences with «long backs»
The problem I have is that they have big commissions with long back - end surrender penalties, and therefore you are locking up your money. (investopedia.com)
All those away games in the first half season, we had one of best away records not long back, need to get it back. (justarsenal.com)
There are many good reasons why stocks are now higher priced, very logically, than say they were 30 - 40 years ago, or even longer back in time. (purefinancial.com)