queer in the head
疯疯癫癫的
A:Have you met John recently?
A:最近你见到约翰了吗?
B:I saw him last wee. It seems he was a bit queer in the head.
B：上周我见到了他，他好像有点疯疯癫癫的。
A:Yes, he has been like that since his accident.
A：是的，自从车祸以后他就这样。
B:What a pity!
B:真可怜!