ja benne azz
It’s when you're too tired to think and just say 'I don’t know' like it’s a death sentence.
He said, 'Ja benne azz, I don’t know what day it is.'
She texted me, 'Ja benne azz, I don’t know where I live.'
He yelled in the hallway, 'Ja benne azz, I don’t know what you’re talking about!'