"... How many Irish Man U, Liverpool, Arsenal ... and these days Aston Villa fans are there.
Wearin' of the red ... singin' the songs ... remembering busby's babes ..."

I wouldn't know tbh Lox. - I don't partake of it or witness it except on news flash scenes. But I guess like the collectively understood conventions one might find in Panto, it's further examples of circus-style norms adopted by football fans within the sphere of
football culture.

Having no interest in either football or panto myself - I'm not inclined to paint my face and chant "you're shit, you're shit, you'reeee SHIT!" or cry "He's behind you!" in the supermarket, library, office, or when out having lunch with friends - or doing any of the other stuff in my everyday life that has likewise nothing to do with football culture, or panto.