It's greek to me, implies you don't speak greek, there is no negative prejudice applied to the greek people or their language. Chinese whispers the name of a g

It's greek to me, implies you don't speak greek, there is no negative prejudice applied to the greek people or their language. Chinese whispers the name of a game that information is lost/changed/confused (aka Telephone) as so helpfully pointed out above comes from the idea that Chinese are deliberately confusing and unintelligible. I was merely pointing it out to raise awareness... and tried to do so without crediting any malice to the OP.