«乱点鸳鸯»

luàndiǎn-yuānyāng

[discriminately appoint affectionate couple; to cause an exchange of partners by mistake between two couples engaged to marry] 鸳鸯: 常用以比喻夫妻。 指几对夫妇互相错配。 后指不顾具体情况而乱搭配