n'oooook
You're agreeing with someone but in a way that makes you look like the boss. You're either right or they're lying. You use it when you feel like you're the only one who matters.
'N'oooook, I knew you were going to say that.'
'N'oooook, I've seen that happen a million times.'
'N'oooook, I didn't need you to tell me that.'