From hearing the shout of "pound a bag" in the market to knowing ‘the donut’ is more than just a fried snack, Chesterfield really isn't like anywhere else in the country, or the world.
We previously asked you for your suggestions, and have pulled together the best responses below.
So, according to people who know, you're not really from Chesterfield if you haven't...

13. Been carried down - or fallen down - the stairs of Xanadu nightclub
90's ravers will remember the venue well! Photo: Submitted

14. Heard the words "pound a bag" while walking through the market
Many people will remember phrases such as these being shouted by the late, much-missed, Chesterfield market trader Don Hollingworth. Photo: Brian Eyre