i dont give a rats ass - You don’t care so much, you’d let a rat’s ass be the last th

You don’t care so much, you’d let a rat’s ass be the last thing you ever see before you die.

I don’t give a rats ass if my dog eats my homework.

My teacher said I failed. I don’t give a rats ass.

I didn’t even show up to the party. I don’t give a rats ass.