a dinni ken
A dinni ken is when you're so lost you might need a map just to get out of your own head.
'I dinni ken how to start the car.', said by a kid who doesn’t know what a key is.
'I dinni ken why my friend is mad.', said by a kid who doesn’t know how to read emotions.
'I dinni ken what the question is.', said by a kid who just looked at the test and fell asleep.