I don't know about all that - A total cop-out used when you know the idea is garbage and y

A total cop-out used when you know the idea is garbage and you don't want to admit it.

'I don't know about all that,' said the kid who didn't even know what 'all that' meant.

'I don't know about all that,' said the teacher who had no idea why the kid was wearing a hat inside.

'I don't know about all that,' said the cat who was clearly judging you.