a "Johnson" answer
A Johnson answer is when you use big words and nonsense to hide the fact that you’re just making it all up.
'What’s the weather like?' 'It’s a tempest of thunder and glory.'
She said, 'I did my homework,' but it was just a bunch of Greek words and a drawing of a cat.
He was asked, 'What’s your plan?' and he said, 'I intend to conquer the moon.'