I think he means 'couldn't care less'.
"The idiom "couldn't care less", meaning "doesn't care at all"
(the meaning in full is "cares so little that he couldn't possibly
care less"), originated in Britain around 1940. "Could care less",
which is used with the same meaning, developed in the U.S. around
1960. "
How confusing.
Slashdot Mirror
I think he means 'couldn't care less'. "The idiom "couldn't care less", meaning "doesn't care at all" (the meaning in full is "cares so little that he couldn't possibly care less"), originated in Britain around 1940. "Could care less", which is used with the same meaning, developed in the U.S. around 1960. " How confusing.