"have got a screw loose" in Chinese (Simplified)
脑子有点问题神经有点不正常
Definition
说某人 '脑子有点问题'，意思是觉得对方有点疯狂、奇怪，或者思维不太清楚。通常是开玩笑或轻松地说，并非严肃的侮辱。
Usage Notes (Chinese (Simplified))
这是口语、幽默的表达方式，用于形容某人有点古怪或疯癫。不要用于正式场合，常在朋友间开玩笑时用。类似表达有：'脑袋瓜有点问题'、'神经不太正常'。
Examples
I think he has got a screw loose—he talks to his plants every day.
我觉得他**脑子有点问题**——每天都和植物说话。
People say she's smart, but sometimes she has got a screw loose.
人们说她很聪明，但有时候她**脑子有点问题**。
My brother has got a screw loose—he went swimming in the lake in winter!
我哥哥**脑子有点问题**——冬天竟然去湖里游泳！
If you think jumping off the roof is a good idea, you have got a screw loose!
你要是觉得跳屋顶是好主意，那你**脑子肯定有问题**！
She spends all night talking to her cat—you'd think she has got a screw loose.
她整晚都和猫说话——你会觉得她**脑子有点问题**。
You have got a screw loose if you seriously want to eat that much chili at once.
你要是真的想一下子吃这么多辣椒，肯定**脑子有点问题**。