From Longman Dictionary of Contemporary Englishnot give a shit (what/whether/about etc)not give a shit (what/whether/about etc) spoken not politeDON'T CAREto not care at all about something or someone SYN not give a damnI don’t give a shit what you think! → shit
Examples from the Corpus
not give a shit (what/whether/about etc)• As David said, the union simply does not give a shit. 