你是神经病吗他们老看你他们是在看你阿神经病阿
[nĭ shì shén jīng bìng ma tā men lăo kàn nĭ tā men shì zài kàn nĭ ā shén jīng bìng ā]
The phrase translates roughly into questioning or commenting on someone’s actions as crazy. It conveys confusion or disbelief at another's behavior.