be you serious . the custom be base loosely on real custom to become some bastardized mish mash . the director go and live for a short while with the xingu tribe in the amazon . what do that mean . it mean he saw them through the eye of an outsider not a someone part of the culture . all what you see be his interpretation of what xingu culture be represent the taking of hallucinogen and marriage and woman dance and jagua painting and others . this do not even come close to true xingu culture . ( btw i love how the tribe be really good african and modern dancer . ) this be just the magical childlike indian stereotype set in the amazon .