This came to me last night watching the Canadian women’s hockey team get their medals and sing their national anthem.
Aside from your own country’s national anthem, how many others do you know all the words to?
Of course, that’s assuming you know all the words to your own. I know O Canada, thanks to having heard it at numerous hockey games all my life, and God Save the Queen, having watched Mrs. Miniver more than once. That’s it.