In Part 3 of our exploration of the numerous nicknames for native northeasterners, we head on over to Wearside to meet the Mackems.

As Glen and Ben take a saunter through the saga of this Sunderland-centred term, they speak to locals, revisit an FA Cup Final, and trawl one of the internet's most opinionated message boards.

But who, exactly, is a Mackem? What is the meaning of Mackem? Where does Mackem come from? If you wish to know, join us on our quest to obtain a mastery of everything Mackem, and take a listen to this episode of North by North-East!