My nerve endings don't seem to register pain anymore (if they ever did) actually :/
Last week, in an incident involving a [should have been dowsed] fire and a gas can my entire right hand (and a large part of the arm) was ignited in flames for a rather long period of time. While my hand was burning I felt absolutely nothing.. when it was put out I felt nothing. When the blisters appeared the next day I felt nothing. When they popped later that day during yard work, I still felt nothing. Was rather depressing, really.
Then there's these scars all over my back.. big ones that look like someone took a whip to me or something. Everytime I take off my shirt around friends or what not I always get 1 of 2 responses - "Damn dude, get your women declawed" or "WTF, were you tortured or something?" Neither are correct, but I really do have absolutely no clue how they got there. They've been there for over a year now and are showing no signs of going away.
Anyway, back to the topic at hand.. an incident where I *should have* been in a great deal of pain happened when I was about 5 or 6 years old, building a tree house with a friend. It was in this monster of a tree - a good 100ft tall or so. My friend went inside to get a drink and I was installing the 'elevator' and decided to give it a quick test. I jumped on it (located at the very top of the tree), waited a few seconds, then it all came crashing down at 9.8m/s^2. I hit just about every branch on the way down and landed on a rather sharp stump with my back to the ground (and the stump in my upper back). I wasn't sure if I broke my back, so I just sat there for a minute, staring at the sky. As I was sitting there I remember thinking that normally whenever something like this would happen, I'd cry and scream (since I was just a little kid). But then I realized that if I did that, my friend and his parents would just come out acting all concerned and make a big commotion about it. Then my parents would hear about it, and there'd be no end to it. So I just stood up. A few moments later my friend came out with a drink, and I downed it and left an hour or so later, without ever saying a word about it.
Oh, and then there was this incident when I was 8 or so at a construction site. It had a bunch of those painting platforms where you pump a lever to raise the platform, and hit the release to go down. I jumped on it, pumped all the way to the top of the house it was attached, then hit the release.. not noticing the fact that my knee was in the gears. As the platform fell with me on it, my skin got caught up in the gears and a large portion (about a 2x2inch area) of the skin around my knee cap was ripped clear off. I got off the platform, walked home, and went into the kitchen to find a washcloth or something to put around my leg. My mom was on the phone and looked at my leg and said something like "What happened?!" I just said "oh.. nothing. Any wash cloths down here?"
Still have a rather large scar from that one.