Could care less?

You know what else bugs me?

People who say "I could care less".

What exactly does this mean?

This is an American thing admittedly so maybe that is my answer as in England we correctly say "I couldn't care less" or "I could not care less.

When I say I couldn't care less about something, it means that it is not possible for me to care less about it than I already do. Or, to be clear, I do not give a shit about it!

If you say you could care less about it, it means that you care about it, at least a little bit. So in effect you are saying the exact opposite of what you actually mean.

I could not care less if I upset anyone with this rant, just sort it out!

Morons.