where or no where?

I would use where or at. Without one of those, the sentence sounds incomplete to me.

What's the weirdest place where a fan asked you for an autograph?
What's the weirdest place a fan asked you for an autograph at?
What's the weirdest place at which a fan asked you for an autograph?

alc24What's the weirdest place where a fan asked you to sign?

no "where"
And if you keep "where", there is confusion as to whether "where" refers to 'asked' or to 'sign'.

canadian45no "where"

What's the weirdest place a fan asked you to sign?


This sounds like a fan asked you to sign a place.

Aspara Guscanadian45no "where"What's the weirdest place a fan asked you to sign?This sounds like a fan asked you to sign a place.
I think that's exactly what it means. So there is confusion, at least between us. Let's see what others think.

alc24What's the weirdest place where a fan asked you to sign?

Alex, what sort of answer are you expecting -- "in the chair at the dentist's office," or "on her knee"?

Thank you all,
Khoff,
This sentence was asked by fan to a singer. So I guess a part of the body would be the answer.

Khoff, what do you think?

Alc24, please be more clear and specific the next time you post a question. A place is not a part of the body.

E.g.,

What's the most unusual body part a fan asked you to sign?
What's the weirdest part of the body a fan asked you to sign for him?

Thank you aspara,

Khoff, why did you ask me that question?

Well, I thought the question was ambiguous. I wanted to know if "the weirdest place a fan asked you to sign" referred to the place where the conversation occurred, or the place/thing/item that was going to be signed.