Grim... wrote:
While "could care less" is a stupid saying, it still works perfectly well as sarcasm, which is what it is.
It works well as sarcasm when spoken, with a particular intonation and stress. However I've heard it spoken many times with no such stresses and in which case, as well as when written, it just looks stupid. And I'm not buying any notion of implied or historical sarcasm that excuses saying it properly.
People need to use italics more in writing. It'd do wonders with ‘I
could care less…’