Manchester United are, numerically, the most-supported football club in the world. They have fans in every country, and those fans' attachment to the club - even though many have no idea where Manchester is - is passionate.
Many of them are so passionate, that they are prepared to go online making mugs of themselves.
'Lifelong supporter', 'followed the Red Devils since birth', and 'red through and through' are claims often made by 'fans' from locations as diverse as India, China, Hong Kong, Saudi Arabia, Singapore and Thailand.
And, sick of having their commitment 'put under a microscope', several of United's overseas fan clubs have challenged their English counterparts to an online 'Manchester United Quiz'.
Keen to show off his knowledge of the team he worships, treasurer of the India branch, Sunil Giggs Patel, said:
"I am a United expert. I know not only that Brian Kidd made 203 appearances, scoring 52 goals for the Devilish Reds between 1967 and 1974, but also who his next-door neighbours were - Geoff and Madge."
And Georgebest Odoya, 25, a member of the Nigerian branch, told me:
"The best and most talented player I ever saw was Duncan Edwards. He was absolutely magical - like Paul Daniels!"
Ali Afzar-bin Suliman, in Riyadh, is an expert in weights. He knows how much every player who appeared for United between 1961 and 2019 weighed - in pounds or kilograms! He's also an authority on kits. And admission prices.
Others had similar bullshit stories.
Mr Lee Cheung, in Singapore, said:
"I am biggest fan of United in world. Everybody know Norman Whiteside score winner in 1985 FA Cup final against Everton, but do you know that he like to eat egg and cress sandwich before every game? And, he alway wear green pyjama, like kit of Nordern Ilerand."
The quiz is likely to take place after Ole Gunnar Solskjaer has been sacked.