[crazykatz]

"There was a bounty on dead rats in some German town and rat tails briefly became a form of urban currency."

Wonder if that is the origin of the saying, "I don't give a rat's a$$"?

I don't give a "damm" is about a coin, isn't it?

[leadhead]

I don't give a "damm" is about a coin, isn't it?

I believe the original expression was " don't give a Tinker's dam", refering to the dam of putty a tinker used when filling a hole in a pot he was repairing. The heat of the molten metal made the putty hard but brittle and it broke away when the metal cooled. Once used, it was worthless; hence the expression was that " I cared so little about something"