If you can arrive late, then so can I: what's sauce for the goose is sauce for the gander.
你可以迟到, 那我也可以晚来: 一视同仁嘛.
Kill not the goose that lays the golden eggs.
【谚】杀鸡取蛋,愚蠢荒唐。
He won't defend us; he can't say boo to a goose.
他不会帮我们说话的,他胆子很小(对一只鹅也不敢嘘一声)。