I don’t see how that’s any of your business.
A way to say you’re too dumb to understand why someone is asking you a question.
You: 'Why are you wearing a hat inside?' Them: 'I don’t see how that’s any of your business.' You: 'It’s on your head!' Them: 'Still not your business.'
You ask why they’re screaming in the hallway. They say it's none of your business. You’re now screaming with them.
You: 'Why did you punch my friend?' Them: 'I don’t see how that’s any of your business.' You: 'He’s your friend!' Them: 'Still not your business.'