j'en ai rien de foutre
I don't give a damn. I'd rather be buried alive than worry about this.
My dad screamed at me for eating my brother's lunch. I said, 'J'en ai rien de foutre, I'm the king of laziness.'
She got stuck in an elevator. She said, 'J'en ai rien de foutre, I'm already dead.'
He forgot his birthday. I said, 'J'en ai rien de foutre, he's a forgetful idiot.'