I have many happy childhood memories of the West Midlands as my dad originated from Worcester and we would occasionally go down to stay with my grandparents. As i got older I frequently got slaps for taking the mickey out of the accent.
The only Peter Kay joke that has ever made me laugh was Do you deliver? No, we do chops, steak but we don't do liver. I've never found him funny, maybe being from Notlob, it all sounded perfectly normal to me!