I can’t stand when people say, “I could care less.”
“I could care less,” is one of those little things that drives me absolutely batshit crazy. If you could care less, it means you care. That’s not what you mean when you say that, is it? What you mean is that you don’t care. Someone posted this handy little graphic in a discussion forum and it really helps. (Click it to see!) Do you get it now?
See also:
Why not try: “I could care less – given more time”.
YMMV.
I know that we must have had a conversation about this at some point. It drives me absolutely nuts. According to the internets it’s one of those things that just became acceptable, either way you say.
http://www.wsu.edu/~brians/errors/couldcare.html