Visiting a Native American reservation for the first time, a US government social worker observed a woman shouting and screaming at a man. "That lady sure has your number," said the social worker to the man when the argument had subsided. "She no lady," replied the man. "She my wife." "Really?" said the social worker. "What's her name?" "Wife name Three Horse." "Three Horse: that's an unusual name. How did she get it?" The man rolled his eyes and said: "Nag, nag, nag."