What is the world’s weirdest language?

The Pirahãs live along the Maici River in the Amazon jungle of Brazil and have become the darlings of language researchers. So much is radically different from Norwegian, or English. Its pronunciation, vocabulary and grammar are all special. You can speak the language, sing it or whistle it. That is not easy for us to imitate. Theil has not heard Pirahã in person. But the linguist understands the tonal system of a couple of hundred languages and can readily comprehend the instructions from another linguist, Daniel L. Everett, the British ethnologist who has lived with these hunter-gatherers and studied Pirahã longest. Regarding the whistling variation of their language, Everett writes that the Pirahã describe it as talking with a sour mouth, the same description they use for sucking on a lemon.

Source: AP