I don't give half a fuck - You're so indifferent that you only need to use half a fuck

You're so indifferent that you only need to use half a fuck to show how little you care.

My mom told me to clean my room. I said, 'I don’t give half a fuck.'

My teacher gave me extra homework. I said, 'I don’t give half a fuck.'

I failed my math test. I said, 'I don’t give half a fuck.'