The term 'Kiwi Tongue' is a reference to the MAORI language, which is the native language of the indigenous people of New Zealand. The MAORI language is an Eastern Polynesian language and is spoken by about 130, 000 people in New Zealand. It is also known as te reo MAORI, which translates to 'the MAORI language'. The term 'Kiwi Tongue' is a humorous way of referring to the MAORI language, as the kiwi is a national symbol of New Zealand.