My dear departed mummy would always attempt to end arguments by saying "The point is sharp". She would then go into a tissy-fit if I told her that, that was stupid and pointless thing to say and did not prove that she was right.
The protection can't be all that effective. Said to be life threatening.
https://news.sky.com/story/ian-watkins-disgraced-lostprophets-frontman-and-convicted-paedophile-stabbed-in-prison-12934607