发神经

发神经

Literally means:

be crazy

Actually means:

go insane; go nuts

It refers to going crazy or being lunatic. It may also mean that one's words or actions are abnormal. It is often used to indicate that one cannot understand what someone says or does,or that he disapproves of such a behavior. Derogatory.

指发疯，即精神病发作。也指做事情或者说话违反一般的情理。多用来在别人说话或做事不合情理时，表示不可理解或责怪。具有贬义色彩。