What does apropos kjøttkaker mean?

apropos kjøttkaker meaning in Urban Dictionary

Norwegian expression useful for switching the niche to one thing completely not related.Originated around a dinner dining table 20 mins by car north-east of Oslo, when the older sister of the home had anything even more to say about meatballs. Trusted in certain circles in Oslo and areas around Oslo.Can be translated to English such as this: "Speaking of meatballs"