have a screw loose 有点不正常
be out of one's mind 发疯
act strangely 行为怪异
not all there 神志不清
odd behavior 奇怪行为
lose one's mind 失去理智
1. People sometimes think he has a tile loose because of his unusual ideas.
人们有时觉得他想法怪异，好像有点不正常。
2. Don’t worry, he’s harmless, just seems like he has a tile loose.
别担心，他没有恶意，只是看起来有点怪。
3. They joked that the old man had a tile loose, but he was actually very wise.
他们开玩笑说那位老人有点怪，但他其实很有智慧。
4. She acts like she has a tile loose when she is excited.
她兴奋时的行为看起来有点怪怪的。
A: Do you think he’s okay? He talks to himself sometimes.
A：你觉得他正常吗？他有时候会自言自语。
B: Don’t be rude, he just seems like he has a tile loose, but he’s harmless.
B：别不礼貌，他只是看起来有点怪，但人很好。
1) 用于调侃某人行为怪异或不合常理
2) 表示轻微的“精神状态异常”比喻说法
3) 常用于非正式口语和玩笑语境
1. 形容某人行为或思维略显怪异、不太正常（非正式表达）
e.g.
They think he has a tile loose because he talks to plants.
他们觉得他有点怪，因为他和植物说话。
idiom
1. A humorous informal expression meaning someone behaves oddly or seems slightly mentally unbalanced.
Synonym: have a screw loose, be eccentric