Australian chiming in.
My favourite Indian restaurant was this little hole in the wall place (for the first three years of operation, they upgraded when the word got out). The first time I went I ordered a Vindaloo, the lovely waitress/chef that took my order asked how spicy. I was a fool and said, I like spicy food, how about a 6 out of 10. I actually made it 3/4 of the way through but the owner/other chef came out to check on me, I think because he was worried I was about to combust. It was astounding, easily the best Vindaloo I have ever eaten.
The next time I went in I ordered a white guy 4, it honestly was still fantastic, but not as good. The owner came out to say hi, asked what I had ordered this time, and he said "Ah yes we make that without any chilli.", never been sure how I should take that. For a while I was hoping to gradually increase my tolerance but I think I am topping out at white guy 9.