David WalliamsDavid WalliamsOooh, that David Walliams is awful but we can't help but like him.

Check out this chucklefest clip in which David is stunned by a fan with an unusual request at a book signing.

Well, we say 'fan'. Unless our eyes are mistaken he looks rather like a Fat Fighter to us... 

David Walliams Book Signing by David Walliams