A two vs two board game where your team is playing with the red chips. Your friend (who will be on your team) arrives late and asks "Hvem er vi?" to which you respond "De røde".
Could also be a more philosofical question, like "Er vi alene i universet? Hvem er vi?" = Are we alone in the universe? Who are we?".
Dear friends, that's actually a very good question. Typically human.
We are an animal who is looking for "Why is there something ?" "why is there a universe, a world? " "Who am I really?"
"Who are we to blame Duolingo ?" We are just very lucky people to have this tool. When there's a mistake, just report it.
Also, it can be children playing a game, deciding which role they will play.
And the best to learn a language is to receive some "electroshock", we remember better crazy phrases. You will have time to make your own perfect phrases :)
Enjoy your trip.