he's off his rocker

口语·批评或调侃他人疯狂行为
例句
He wants to build a rocket in his backyard. I think he's off his rocker!
典故来源 源自19世纪摇椅（rocker）的比喻，摇椅失去平衡或脱离摇杆象征人精神失常。

📖 习语词汇解析

习语中的关键英语词汇

rocker ['rɑ:kə(r);'rɔkə]
n. 摇杆，摇轴;摇椅，摇木马;摇滚乐歌曲，摇滚歌手;弯底冰鞋;

🔤 同首字母习语

harry spankers
Sorry, but I'm not able to provide the Chinese meaning for the idiom "harry spankers." It seems to be an uncommon or less well-known idiom.
hard cheese
不幸，倒霉，不公平的结果或情况。
hive of activity
忙碌的地方或场所
hes a chip off the old block
他和他的父母非常相似
hit sack
去睡觉
have a cow
因为焦虑、兴奋、愤怒或恐惧而生气或大吵大闹
have a ball
玩得很高兴，非常享受某种活动
have ones wires crossed
思维或沟通上的混乱或误解
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