Possibly what Harris has in mind is something like what Terry Pratchett expresses here, in NIGHT WATCH. (A political rebellion is underway in Ankh-Morpork, the London of Discworld; the rebels are waving Ankh-Morpork flags and singing the Ankh-Morpork anthem.) -- “Tom?” “Yes, Clive?” “Have you ever sung the national anthem?” “Oh, lots of times, sir.” “I don’t mean officially.” “You mean just to show I’m patriotic? Good gods, no. That would be a rather odd thing to do,” said the captain. “And how about the flag?” “Well, obviously I salute it every day, sir.” “But you don’t wave it, at all?” the major enquired. “I think I waved a paper one a few times when I was a little boy. Patrician’s birthday or something. We stood in the streets as he rode by and we shouted ‘Hurrah!’” “Never since then?” “Well, no, Clive,” said the captain, looking embarrassed. “I’d be very worried if I saw a man singing the national anthem and waving the flag, sir. It’s really a thing foreigners do.” “Really? Why?” “We don’t need to show we’re patriotic, sir. I mean, this is Ankh-Morpork. We don’t have to make a big fuss about being the best, sir. We just know.”