There is a way people in India build up their tolerance. After you do this with your ghost peppers nothing else seems to be hot!
http://thehotpepper.com/uploads/monthly_05_2014/post-4713-0-80267700-1401221498.jpg
http://thehotpepper.com/uploads/monthly_05_2014/post-4713-0-80267700-1401221498.jpg