A word Norwegians are not very proud of having given to the world: it derives from Vidkun Quisling (1887-1945), a Norwegian politician who collaborated with the Nazis during World War II. He established his name as a synonym for "traitor", someone who collaborates with the invaders of his country, especially by serving in a puppet government.
It is, arguably, the worst and most grave insult a Norwegian can throw at another.
Quipping is the method many video gamedevelopers use to avoid the workload involved with voice acting; it is the use of short phrases or sounds (grunts, laughter, etc.) in the place of fully voiced lines of dialogue.