国语辞典媳妇熬成婆
忍气吞声侍奉公婆的媳妇，日子熬久了，总有一天也会成为权大威风的婆婆。比喻受尽委屈者，终会苦尽甘来，一逞威风。如：「像咱们这些小教员，何时才能媳妇熬成婆，当上校长呢？」
英语 lit. even a submissive daughter-in-law will one day become a domineering mother-in-law (idiom), fig. the oppressed will become the oppressor, what goes around comes around
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