Aye I'm a 43-year-old Geordie and I've never heard "Wor Hyem" from even the broadest of Geordies. "Gan hyem", "Wor hoose"...aye.
I honestly can't say I've ever heard any Gerodie say wor hyem like, wor hoose, wor lass, wor city, wor kid etc.
Call it Castle Flags
No-one gives a shit I know but how can you grow up in Newcastle and never have heard anyone say "wor lass" or "wor kid"?
WOR BAAL!