What you said exactly makes no sense. If you said "I could NOT care less" it would mean, you care so little that it is not possible to care less than you do cur

What you said exactly makes no sense. If you said "I could NOT care less" it would mean, you care so little that it is not possible to care less than you do currently. Regardless, I think this is just a result of people getting lazy with their language... it is not meant to be said in this say, and is properly stated, "I couldn't care less". In the US (can't speak for elsewhere) people just repeat what they think others have said, to convey what they think they understood. This is the source of a lot of language rot.