i won't hold my breath - You say this when you're tired of waiting and ready to throw

You say this when you're tired of waiting and ready to throw your hands up and walk away.

Your brother: I won't hold my breath. Because you still haven't cleaned your room.

Your crush: I won't hold my breath. Because you still don't know my name.

Your friend: I won't hold my breath. Because you still can't beat my high score.