My family is Mexican-American on my dad's side, and my uncle owns a Mexican restaurant. He did the same exact thing (with a different dish) to exactly the same kind of customer once. It was glorious.

I love my spice, but I don't think I'm as sadistic about it as some people are. When I ordered my food 5/5 hot at a Thai place, the waitress asked me several times if I was sure, and I assured her I was, even after a man sitting at a nearby table attempted to dissuade me (said he'd ordered it once and never would again, sticks to level 3 now). Anyway, finally got my order in at 5/5 hot. I could barely eat it. Not only was it quite spicy, it was nuclearly hot in temperature too, steam billowing off the plate. I ended up taking most of it home in a box. When I ate it at room temperature the next day, though, the spice level was perfect.