有ㄧㄡˇyǒu奶ㄋㄞˇnǎi便ㄅㄧㄢˋbiàn是ㄕˋshì娘ㄋㄧㄤˊniáng

  1. 比喻趨利附勢，誰能給好處即願聽從，為之效勞。如：「俗語說：『有奶便是娘』，只要誰能給他好處，他就為誰辦事。」

英lit. whoever provides milk is your mother (idiom)​, fig. to follow whoever is feeding you, to put one's loyalties where one's interests lie