[zozbot123]

> - Many politeness or etiquette rules. I get that you shouldn't outright insult people. But I don't understand things like not starting to eat before everyone has their food, fighting over who is going to pay for something, insisting that others go through a door before you (this might be a British thing).

https://en.wikipedia.org/wiki/Taarof

"... a worker negotiating a salary might begin with a eulogy of the employer, followed by a lengthy bargaining session consisting entirely of indirect, polite language – both parties are expected to understand the implied topic of discussion. Likewise, a shopkeeper may initially refuse to quote a price for an item, suggesting that it is worthless ... Taarof obliges the customer to insist on paying, possibly several times (three times), before a shopkeeper finally quotes a price and real negotiation can begin."

"Taarof plays a large role in the etiquette of food. If you go to any meal, are invited to any house for food, then you will be expected to eat seconds and thirds. You must eat to please the host but at the same time taarof demands that you can’t just go ahead and dig into the food ..."