The (or a) meaning to Couldn't Careless:
Well, originally, I'm not really sure if it meant too much, but what I have now concluded is that it would normally be 'couldn't care less', but it is not, meaning that I cannot be in that frame of mind.
Or maybe it could be that I couldn't be careless, or I would be hurt...
There could be more explanations...we shall see...
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