The rivalry between Geordies and Mackems will probably rage on 'til the end of time, but for today it's all about the folk from Sunderland (that's what a Mackem is, FYI).
How many times will I need to explain what one is today!!!!
-- Coco (@cocotheclown123) August 12, 2016
-- George Clarke (@MrGeorgeClarke) August 12, 2016
On National Mackem Day, people are sharing what makes them proud about their home.
There's the lingo
-- Nicole F Burns (@burnsfnicole) August 12, 2016
-- David Gowans (@DFGowans) August 12, 2016
-- Paul Swinney (@lightaperture) August 5, 2016
-- Claire Riedlinger (@CRiedlinger77) August 12, 2016
-- Paul Lancaster (@lordlancaster) August 12, 2016
-- Allen (@ADC_LFC) August 12, 2016
And last but not least, the cuisine
Well, Happy #NationalMackemDay, marras! Might have some cheesy chips to celebrate! ??
-- Miranda Ashitey (@mizzieashitey) August 12, 2016
-- Whitey McPrivilege (@yankeebrit77) August 12, 2016
Happy #NationalMackemDay all you Sunderland lads and lasses. From a SW Durham pit yacker.
Blue pop all round.
-- Berek C (@FTMBezza) August 12, 2016