So this is a lil peeve of mine.. and that peeve is when people get peeved about someone saying "I could care less" instead of saying "I couldn't care less". I'm usually a grammar Nazi, but I use could rather than couldn't.
The reason being is because the couldn't version is shortened. Most people don't know the full saying and the full saying is "I couldn't care less than I already do, which is not at all" or something along those lines. That makes sense.. but when you shorten it, it doesn't.
It doesn't make sense because if someone is telling you something they care about or that you should care about and you respond with "I couldn't care less", you're saying "I could not care less". So, just making up numbers, someone's care factor is 80%.. you're telling them you're incapable of caring less than 80%. If someone thinks your care level should be 100%, you're telling them that you're incapable of caring less than 100%, which means you do care.
Now, if you tell someone "I could care less", you're telling them you are capable of caring less than what they want you to care. It makes more sense that way, if you're trying to go with the shortened version.
So, if that makes sense to you, join me in using "I could care less" when there is something you don't care about.. or don't, I could care less.
Many such stupidities persist.
First world problems.. they're the worst.