How to say {are you nuts?} in Chinese ?

This is a good and useful post, but it should have been posted in the Chinese Slang group. It should also, of course, be clearer of the offensiveness of the three first examples (the fourth one isn't that offensive, is it?). The English "Are you nuts?" isn't very offensive.

Am I correct in thinking the 操 in example "C" should be fourth tone rather than the usual first?

Most definitely, but you will very likely provoke considerable anger if you are vulgar or foolish enough to try using these expressions with Chinese people.

(Or they may simply despise you as an idiot foreigner unaware of the offensiveness of the language you are using.)

'Are you nuts?' is a pretty mild form of abuse in English, and only the last one of these is anything like an equivalent for it in Chinese.

This is a deliberately misleading and disingenuous post.

what is nut ?

疯了，脑子坏了，神经病，crazy,insane,a few roos short in the top paddock[Aussie slang],bats in the befry ,等等。。。都有一样的意思

ps lonnie,小心； looney also means nuts

操 fourth tone = fuck (very very bad word )， not in official chinese, people use it in daily life

(sorry i'm chinese and my english is not good)

瓜皮