Understand that this is a drinking song and does not reflect the common ethics or social norms of Norway
I think I know which song you mean. We usually sing it this way: “Og vi skåler for våre venner og de som vi kjenner, og de som vi ikke kjenner, de driter vi i, hei skål! Og så svinger vi på seidelen igjen, hei skål!”
That Norweigian drinking song - YouTube
Google didn’t do so good on this one. It means: And we toast to our friends and those we know, and those we don’t know we don’t give a shit about, hei skål!
Og så svinger vi på seidelen igjen, hei skål!
And so we’re taking the neighbor’s wife home, hei skål! !