This was a fun read, thanks.
It could be some people digest capsaicin more than others. I've had my fair share of the (I want to say) second highest types of spicy. Your ghost peppers, your birds eyes, Thai red chillis, etc. Hardly anything over a million scoville. I get the afterburn from some of it. But one time, I got a Nashville chicken sandwich from a hole in the wall place that popped up during COVID. It was so hot I was running around the room for half an hour, and for the first time in my life, I felt the spice in my urethra when I peed afterwards. I'll never forget it.
He's a perennially uncomfortable weird sonofabitch