What foot size is considered big for a man?

Could you please clarify what exactly is meant by "big" when it comes to a man's foot size? Is it relative to the average male foot size, or is there a specific numerical measurement that defines it as such? Additionally, are there any cultural or geographical factors that could influence this perception of what constitutes a "big" foot size for a man? Understanding these nuances would help provide a more accurate and comprehensive answer to your question.