off one's trolley
成語所屬單字trolley
off one's trolley — 慣用語
1. Behaving in a foolish, confused, or mentally unsound way.
1.慣用語
釋義
頭腦不正常，發瘋
Behaving in a foolish, confused, or mentally unsound way.
例句
You must be off your trolley if you think I will pay that much for a used bicycle.
Grandpa started talking to the television again — the nurses say he is completely off his trolley.