(one) doesn't give a rip (about something)
One does not care in the slightest (about something); one attaches no importance to something. I don't give a rip about making money, I just want to do something with my life that helps other people. He doesn't give a rip about the show ever since they killed off his favorite character.
don’t give a rip
tv. don’t really care at all. Go ahead! Ruin your life! I don’t give a rip.