Tha's nowt rung wi't sarth Yorkshear, I'll 'av thee no, Tubby!
(I lived in Sheffield for 20 years).
That joke reminds of a song by the Lancashire group Fivepenny Piece where the new (southern) school teacher is trying to find a litter bin in a northern school. It ends with her asking the head teacher "Where's the bin?", to which he replies "How it can help I can't see, but if tha' insists upon knowing, I've bin out back for a pee!"