Why 'search me' means 'tell someone that you don't know the answer to a question
I am reading the Oxford dictionary, and I find a item that I don't understand.

One meaning of search:
Why 'search me' means 'tell someone that you don't know the answer to a question.Could anyone explain it for me?

Question

Why 'search me' means 'tell someone that you don't know the answer to a question
I am reading the Oxford dictionary, and I find a item that I don't understand.

One meaning of search:
Why 'search me' means 'tell someone that you don't know the answer to a question.Could anyone explain it for me?

Answer

Search me.

"You can investigate (=search) me completely for the information you want but you won't find it."

http://idioms.thefreedictionary.com/search+me

It is an idiom.