a dinni ken
A dinni ken is when you’re too lazy to think and you just say it like it’s a fancy word.
'I dinni ken what time it is.', said by a kid who was still in bed at noon.
'I dinni ken how to get home.', said by a kid who doesn’t know the difference between left and right.
'I dinni ken what this is.', said by a kid who just looked at the assignment and screamed.