i don't care
A way to say you don't like what's happening and are probably tired of everything.
You: Why are you yelling at me? Me: I don't care. You: Why? Me: Because I'm tired of you yelling at me.
You: Why didn't you do your homework? Me: I don't care. You: Why? Me: Because I'm tired of failing.
You: Why are you even here? Me: I don't care. You: Why? Me: Because I'm tired of your questions.