ねこにかつおぶし

猫に鰹節

表記・読み：猫にカツオブシ・猫にかつおぶし・猫にかつお節・ネコに鰹節・ねこにかつおぶし

1. 1

   temptation one can't resist; setting a wolf to mind the sheep; trusting a cat with milk

   expressions (phrases, clauses, etc.)idiomatic expression