Ask HN: Do you think you are smarter than average person?

Alternate questions: - Do you think you are smarter than average citizien of your country? - Do you think you are smarter than average HNer?

This type of question has been intriguing me for some time, as I feel almost everybody deep down thinks he is not a genius, but he still knows better than average Joe. I would be really curious if there were surveys with this question and how would different countries compare in results.