nor man av got skinchies

Skinchies
Expression used by children in NE England, whereby you cross your fingers and shout "Skinchies" to be safe or claim immunity when playing a game.

Can be nullified by another player shouting "Nae skinchies!" while your fingers are uncrossed.
“I'm not out I've got skinchies.”
"You can't tag me, I've got skinchies."

https://youtu.be/sCjLyPPUHpc?t=100