see if I care
I absolutely do not care at all if you do or go through with something. Fine, spend all your savings on some stupid muscle car, see if I care! A: "I'm going to tell the teacher what you did!" B: "Go ahead, see if I care. You can't prove anything."
See if I care!
Inf. I do not care if you do it! Mary: That does it! I'm going home to Mother! John: See if I care! Sue: I'm putting the sofa here, whether you like it or not. Bill: Go ahead! See if I care!
See if I care!
and SIIC exclam. & comp. abb. Go ahead and do it because I don’t care. Leave early! SIIC!