Wool comes from woolyback.
Decades and decades ago outsiders coming into the city were charged a toll on how many people/livestock crossed over the entry points to the city.
So what some outsiders would do is carry their sheep in on their back, avoiding a toll.
Woolyback was always St. Helens, Wigan, Warrington. Anywhere that says 'ey up. And it was scouse term (still is).
It then encompassed anybody immediately outside the city: Wirral, new towns like Skem.
Now more than ever it's developed into any non-scouse.
The people who class Bootle, Huyton, Halewood etc. as woolyback areas are only doing so based on the colour of bins.
We love to rip the bluenoses by telling them they're moving out of the city, not scouse anymore but come on be honest is Carragher not scouse? Is Gerrard not scouse.
I'm from a scouse heartland in the dingle and the ones calling lads from Bootle non-scouse must have some big fucking chips on their shoulder.
Oh and by the way the only people that use phrases like OOT and OOC are gimps on message boards and proper wools.
You can spot this kind of wool a mile off because they call the mancs "the scum" call us "the pool" and have their own little woolybackisms - shit jumpers , fringes, earings, and 1 eyebrow between a whole family.