off your rocker
瘋了、精神不正常或古怪
口語·開玩笑說人瘋了
英文釋義
being crazy or mentally unstable
例句
If you think you can fly, you're off your rocker!
典故來源
19世紀俚語,rocker指搖椅,離開搖椅比喻失去理智或精神失常。