In HS, while running through a backyard at night, I stepped into a hole. In that hole, there was a very sharp stake-like pipe sticking straight up from the bottom. The calf of my leg landed on it and was impaled in it and ripped open badly.
Its decades later, and I still have a huge foot-long, inch wide, J-shaped scar along the outside of my leg.
It actually looks a lot like the bite radius of a large shark (and from time to time I’ve teased people with a wink that it was). 
Another one I remembered today was when I got cellulitus in my foot. Swelled up to about the size of a football with a nasty looking purple and pink mottled color and a weeping open sore at the point where the infection (probably) got in.
Mine wasn’t gross to see after the fact, but was absolutely awful to watch. I was playing football in high school as a defensive tackle and as I crossed the line of scrimmage on a pass rush stunt, thel offensive lineman nearest me planted his shoulder square on the outside of my left knee. On film you could see my knee buckle inward in a wholly unnatural and grotesque way. I ended up tearing my ACL and strained my MCL.
There are a few but I’ll go with the one that freaked me out the worst. I had just gotten to the house of a new friend. He had a large poofy cat with an attitude problem. The cat was outside and I went to pet him just as their dog barked. He freaked out and scratched me across my right eye. I could feel something wet around my eye and the vision was really blurred. His stepmother (who was a nurse) answered the door and dragged me into the bathroom after I told her what happened.
When I saw my face in the mirror I couldn’t believe what I was looking at. The cat had made a horizontal slash through my eyelid and I could see my eyeball moving through the hole. My vision was blurred because the middle of my eyelid was drooping. Stepmonster didn’t believe the way I had gotten hurt. I guess she thought I had been in a knife fight on her front porch or something. Bitch put a band-aid over my eye and said it should be OK just like that. :mad: It took seven stitches to close and, fortunately, the eye underneath was fine.
The scar stayed small and it’s mostly hidden in the fold of my eyelid. His dad’s nickname for me was “cat scratch fever” after that. We didn’t stay friends very long.
Strangely with all of the damage I have done to myself, the nastiest looking was probably a sunburn. I was skiing, and nobody expected the sun to come out. But it did at 10AM and stayed bright as hell as I spent the whole day over 9000 feet.
By night my face was red. By bedtime my face was red and puffy. By morning it was red and really puffy with blisters covering my entire face. By the next day the blisters had mostly broken open. particularly on my eye sockets and lips, which were so puffy and oozy I didn’t look like I had a human shaped mouth and eyes, while the rest of my face had dessicated dead skin falling off massive blisters in a zombie like fashion.
Metal spike through my knee, more than twenty years ago. Wasn’t pretty.
I got a chunk scraped off my nose after a fell onto a chair with it’s legs pointing upwards! :smack:
I was standing on the side of the road at night with a few friends. I never saw the 10-speed bicycle coming. He hit me straight on. The front wheel went right between my legs and my face smashed into his helmet. Broken jaw, chattered cheekbone and a broken eye orbit. My entire face was black and blue for weeks. The blood vessels in my eyes burst, so the whites were bright red. The bicyclist was training for a race and was hauling ass when he hit me. That was nasty and extremely painful and the asshole never apologized for hitting me. He was fine btw.
That’s horribel! It reminds me of a story of my own, not as bad…Ten years old, in India, riding on my aunt’s motorcycle. She was poor and the bike had these little levers for the rear passenger to put their feet on…but the guard to block your feet from hitting the wheel was broken or not on or something. Anyway we were driving through traffic and as we passed through a circle somehow the back of my foot touched up against the wheel. It scraped off a HUGE chunk of flesh off my foot. Thankfully I was wearing thick socks, but my aunt pulled over into the middle of the circle. There was blood just everywhere - I remember my entire sock being soaked with it, and my foot looked really nasty.
Also healed, no scars that I can see.
Bounced my face off a windshield as a kid and severed the center 3/4 of my lower lip with my upper teeth. They reattached it, but the reattachment was unsuccessful and the tissue necrotized over the course of the next several days until my whole damn lip just fell the hell off in the middle of lunch one day. That was…rather unsightly all the way through.
Head on collision and face first through a windshield on a country road (four nights before high school graduation). Pretty messy but, since I was on the inside looking out, I never actually got to see it. I’ll just take my fellow passengers words for it. I started wearing a seat belt after that.
I had the misfortune to live in a remote community where the only dermatologist turned out to be some MD who just hung up a ‘dermatologist’ shingle but had no training in it. When I went in for a rash on my forehead, he failed to read my allergies page. Or if he read it he didn’t understand it (the lack of training). Anyway, the medication he gave me contained the chemical I’m allergic too. I know, I should have read the label, but I was young and didn’t. Anyway, after a few days I looked like the worst case of poison ivy you could ever imagine, doubled , on my face.
Going back to the original doctor was worthless. That’s when I found out he wasn’t board certified.
Anyway, I ended up at a University dermatology clinic and was seen by 3 physicians. One told me, “When you recover your skin will be much smoother. This is just like a chemical peel!”
Anyway, they gave me meds, I healed up in a month, and ever since then when I go to a specialist I make sure he’s board certified. And I’m very forceful about the contents of medications that go on my skin.
Running into the wall and falling over and winding up with a surgical scar and half my hair shaved due to the resulting hematoma.
Trying to jump over a bench and not making it, which resulted in a gash in my face. As the nurse stitched it I asked “Can I be called Scarface now?”
You can guess what substance played a role in these incidents.
I used to get very frequent, very painful sore throats, at least 6 or 7 times a year. My primary care doc said, “If you get another sore throat in the next month, I think it’s time to take those tonsils out.”
Of course, I got over one sore throat and got another one like a week or two later. It was so swollen in there I even had some difficulty breathing. But it was the color that was really gross… it looked like someone left a plate of liver out a little too long, purple-black and just plain nasty. The doctor audibly gasped when he went to take a look… and I had my tonsils out quite soon after! 
Well, fuck.
Colophon (cycles ~75 miles a week)
Hey, if you ever fall off & land in a hole with a sharp spike at the bottom, you let me know… 
I’m not sure if you can call this an actual “injury” but it’s the ugliest thing I’ve ever had on my body. Small, but UGLY! Back in the 80s I was in the Air National Guard, because I lived in Alaska, which the military considers “overseas”. I had to have all of the same shots that people who go overseas have. One of them (can’t remember which sorry, there were several of the damned things, which took place over a three day period), had the side affect of causing an ugly boil-like sore on about 10% of the people who got it (guess who fell into that 10%?).
The thing was probably 3 inches around (including the outer ring of redness and swelling) and was right on my shoulder. Ugleeee!
Besides my being born ugly?
Bicycle injuries also. In 1993 a car pulled out in front of me. I hit the front fender; flew over the hood; landed on my helmet; then slide on my back over recently poured concrete. My back looked like someone took a cheese grater over it and I still have discolored skin where it happen on a shoulder. Helmet probably saved my life as the only thing that didn’t hurt was my head.
In 2003 I crashed in my last bike race. Beside road rash, I punctured a lung with a cracked rib. I still ride over 4,000 miles a year, but don’t race.
Then there was my heart attack while riding in November 2000. Long story.
All this physical fitness is going to kill me. :eek:
But you’ll look fantastic when you go.