《史记·七十列传·滑稽列传》
淳于髡用隐语来规劝讽谏齐威王，说： 都城中有只大鸟，落在了大王的庭院里，三年不飞又不叫，大王知道这只鸟是怎么一回事吗？ 
淳于髡说之以隐曰： 国中有大鸟，止王之庭，三年不蜚又不鸣，不知此鸟何也？ 
Xun Kuang used a riddle to advise and remonstrate King Wei of Qi, saying: There's a bird in the capital city that has come to rest in your Majesty's courtyard. For three years it has neither flown nor called out. Majesty, do you know what is going on with this bird?