n s'it
N s'it is the last thing you say when you’re too tired or too angry to explain anything else. It’s like throwing your hands up and saying ‘whatever else is going on.’
He said, ‘I don’t know why I’m late, and n s'it.’
She texted me, ‘I’m not coming to the party, and n s'it.’
He yelled at the bus driver, ‘You’re the worst, and n s'it.’