Pick a turn of phrase that needs to be retired due to misuse or one that should be brought back. Such as, "You need to pull yourself up by your boot straps." Misused, this phrase originally meant to be ironic and a reference to completing an impossible or ludicrous task. Pick one and explain yourself.

I Do Care

I could care less.

This means that you could care less. Meaning, you do care in the first place. And though this phrase is originally intended, as "I couldn't care less," which means that you do not care at all, humanity's lack of attention to detail has turned this phrase into the complete opposite of what it was intended to mean. Therefore, it should either be retired, or corrected completely.