However, for some reason I've never felt quite strongly enough about this issue to blog about it (not on a Tuesday, anyway).
Last week, though, I was catching up on some (very) old podcasts and found that John Cleese has already said everything I wanted to say on the matter, much more eloquently than I ever could:
(ETA: Eva pointed out that David Mitchell has had a very similar rant on this subject
Now I have something to which I can refer people who challenge and/or mock me for saying "I couldn't care less". I will continue to say it this way because a) I'm still British, damnit and b) it's correct, whereas the North American way really doesn't make any sense (sorry).
A plague of dead parrots on people who carelessly say "I could care less" when they don't care at all!
*I say UK just because I'm not 100% sure which version is used in Australia, New Zealand, or Ireland, although I suspect they all say "I couldn't care less".