
Stand/turn something on its head
Figurative Usage
The phrase is often metaphorical and does not involve physical 'standing' or 'turning'.
The latest findings stand our knowledge of nutrition on its head.
Unexpected Change
It implies a surprising or unforeseen reversal of what was previously accepted.
His win turned the predicted results on their head.
Impactful Reversal
This phrase signifies a change that has profound effects or significance.
The new evidence turned the whole argument on its head.