(not) give a toss

(not) give a toss

slang To be concerned about someone or something. Typically used in the negative to convey the opposite. I don't give a toss about making money, I just want to do something with my life that makes life better for others. I haven't given a toss for the show ever since they killed off my favorite character. Do whatever you want, I don't give a toss.
See also: give, toss
Farlex Dictionary of Idioms.

not give a toss

BRITISH, INFORMAL, RUDE
COMMON If you don't give a toss about something, you do not care about it at all. I didn't give a toss about society because it had never given a toss about me. `We couldn't give a toss what journalists think,' says the band's drummer. Note: In this expression, `toss' is a rude, slang word meaning to masturbate.
See also: give, not, toss
Collins COBUILD Idioms Dictionary, 3rd ed.

not give (or care) a toss

not care at all. British informal
1998 Country Life I have swum in the Dart only a few yards from a mink, and the mink has not given a toss.
See also: give, not, toss
Farlex Partner Idioms Dictionary

not give a ˈtoss (about somebody/something)

(British English, slang) not care at all about somebody/something: I don’t give a toss what he thinks!
See also: give, not, toss
Farlex Partner Idioms Dictionary
See also:
  • (not) give a fig
  • (not) give two hoots
  • (not) care a toss
  • (not) care a fig
  • fig
  • caring
  • (not) care a hoot
  • (not) care two hoots
  • be (not) as black as (someone or something) is painted
  • break the bank, to