羹：浓汤；虀：通“齑”，咸菜。被热羹烫过的人，吃凉菜也要吹一吹。比喻鉴于以往的教训，遇事过分小心，该做的不敢做或举措失当。
英语 The dog that has been beaten with a stick is afraid of its shadow.
