Generally fore-shortened to, 'Scrote
An individual with poor personal admin; little - or no - education; a bad attitude, and low (or illegal) income. Will make little, if any, contribution to the rest of humanity other than to maintain Legal Aid lawyers in the manner to which they have become accustomed.
Shurely shome mishtake?
Indeed, further research indicates that, in this context at least, it is a compound of Old Norse, "scrotte" and "bogge."
"Scrotte" - can't be arrsed + "bogge" - peat digging.
This makes more sense apropos this particular usage since central heating has been prevalent in the aforementioned area for some weeks now.