I dont give 2 shits and a flying fuck
You're so uninterested you're like a dead zombie who just got hit by a truck.
Your friend tells you about their new pet and you say, 'I don't give 2 shits and a flying fuck, I'm still mad about your last pet dying.'
Your boss gives you a bad review and you say, 'I don't give 2 shits and a flying fuck, I'm going to quit and get a burger.'
Your crush talks to you and you say, 'I don't give 2 shits and a flying fuck, I'm still mad you didn't text me back.'