Mine is two, I can't decide
1. I was gonna oull out some teeth at my dentist's once, and instead of getting the drug which causes one to be analgesic, the dentist just stuck the drug that was supposed to get my teeth out easier, right into the flesh, the needle was about 1 cm into it.
2. I was in secondary school once, and I needed to go to the toilet, but it was closer to the forest, so I went over there to urinate, and after it, I saw a branch and decided to swing a bit on it, but it broke, and I fell around 2m down, and I hit the head, arms, and other areas, it would be better if I fainted, but I didn't, and I didn't have my cellphone, so I was stuck there around 3 hours, and I couldn't move my arm before 3 weeks passed.