I ain't with it - So useless it might as well be dead. You throw it in someone

So useless it might as well be dead. You throw it in someone's face like it's a curse.

I ain't with it. You think this is a good idea? It's not. It's a disaster.

I ain't with it. You just ruined my day.

I ain't with it. I'm not even mad. I'm just sad.