Someone mentioned 'It looks black over Bill's mother's' -- that's Black Country as far as I know. From the same neck of the woods (where I grew up), there's a wealth of expressions that use the verb 'bost' (cognate with Standard English 'burst', I think):
bost as a verb (simple past and past participle also
bost) = break, as in "Yow've bost it", "It day work, it's bost", "Gerron with it or Oi'll bost yer 'ed"
bostin as a present participle/adjective = excellent, very good
bost off as a verb = move quickly, get a move on
The latter in particular tends to be misinterpreted by people from elsewhere -- it's not a synonym for various other four-letter words followed by 'off', meaning 'get lost'; you might say to a driver who's sitting at a green light "Goo on, bost off!", meaning "Get on with it!" rather than anything stronger.
And you might call the dozy driver
saft (= soft in the head) if he doesn't bost off to your satisfaction.
