Walter:
...Two, their one tough guy, Billy, claims to know Piressan culture....
Two examples I can give for this: One, my elder bro is married into a family from India for many years but was still surprised by things he learned about their culture when he visited India with them. Amusingly, even his in-laws got sick from the food.
Two, I spoke with a lady who said she was from West Africa when I asked what nation she's from. Then later said she was from Ghana. "So... which nation is it? West Africa? or Ghana?" "Don't you know know Africa? Ghana and West Africa. America has states, right?"
Ghana is a nation, but she was comparing it to a state because the meaning of the word state can also mean nation. "United States" may as well be "United Nations" to some.