"harakeke" means: The Maori word for New Zealand flax — a tall, striking plant native to New Zealand and the Pacific Islands that has been used for centuries.... It carries a violent or aggressive reference, so it is worth noting the context. In most cases the word is used jokingly or for emphasis rather than as a sign of real intent. A calm question about where it was heard is usually all that is needed; pay more attention to behaviour and tone than to the word itself.