Interesting non-legal fact of the day. "I don't give a dam" doesn't have anything to do with eternal damnation of a soul. It's about an extremely low worth copper coin out of India called a dam (see the pic). It's about the same as saying "I don't give a half-penny." (Which would also be hard to do since the US stopped making half-penny coins before the War Between the States)
And still it makes so much more sense than it does if it's about damnation.