not care a hoot
(not) care a hoot
To be concerned about someone or something. Typically used in the negative to convey the opposite. I don't care a hoot about making money, I just want to do something with my life that makes life better for others. I haven't cared a hoot for the show ever since they killed off my favorite character. Do whatever you want, I don't care a hoot.
not care (or give) a hoot (or two hoots)
not care at all. informal 1990 Karen Lawrence Springs of Living Water Never think about anybody but yourself, do you? Never give two hoots about your poor little sister following you around.