11th January 2008, 2:08 PM
The phrase is "couldn't care less". To say you COULD care less means you care more than the minimal amount. That means you care about it. Couldn't care less means you are at the absolute smallest level of giving a care, meaning you don't care at all.
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question." ~ Charles Babbage (1791-1871)